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我刚刚完成编写此代码，并准备开始调试和测试。但是，当我尝试在GDB中运行它时，控制台仍然空白。将其放置五分钟后，控制台中的代码下方无任何显示(无错误或程序文本)。我缺少什么导致程序无法通过编译器运行？感谢您的任何帮助，下面包括每个功能/行应该执行的代码和描述。
// This program is able to generate a random number to be doubled, digits reversed, raise to 2 3 and 4 power, sum the digits,
// if two digit raise first digit to second power, and if three digits and the last digit is <= 4 then raise the first two digitss to the power of the last digit.
// In addition if after an operation is performed the number is < 10, 10 will be added to the number, the number will be checked for prime and each successive
// operation will use the most recent number generated.
//This is for Week 6 Assignment CS265
//These three lines initialize the required predefined functions to run the program.
#include <iostream>
#include <stdlib.h>
#include <time.h>
//This sets the namespace for the entire program to std.
using namespace std;
//This function doubles the current number.
int doub(int d)
{
//This creates a variable to store the doubled number.
int duo;
//This doubles the number.
duo = (d*2);
//This returns the value for the doubled number for use in output.
return duo;
}
//This function reverses the digits of the current number.
int reverse(int r)
{
//This creates a variable to store the reversed number.
int revnum = 0;
//This while loop runs to split the digits of the number.
while (r > 0)
{
//This reverses the number.
revnum = revnum*10 + r%10;
//This specifies the digit order of the number.
r = r/10;
}
//This returns the reversed number for use in output.
return revnum;
}
//This function raises the number by user selected power.
int power(int p)
{
//This creates a variable to store the number post operations.
int powe = 0;
//This creates a variable for the power to raise by.
int rais;
//This explains to the user to enter the power to raise by out of 2, 3, 4.
cout << "Welcome to Power Raiser." << endl;
cout << "Please enter the power to raise by: 2, 3, or 4." << endl;
//This stores the user input for the power to raise by.
cin >> rais;
//This if statement raises the number to the second power if 2 is entered by the user.
if (rais == 2)
{
powe = (p^2);
}
//This if statement raises the number to the third power if 3 is entered by the user.
if (rais == 3)
{
powe = (p^3);
}
//This if statement raises the number to the fourth power if 4 is entered by the user.
if (rais == 4)
{
powe = (p^4);
}
//This closes the program if anything other than 2, 3, 4 is entered by the user.
else
{
//These lines explain the error.
cout << "Input Error" << endl;
cout << "You entered: " << rais << endl;
cout << "Cannot raise to this power currently." << endl;
cout << "Exiting Program" << endl;
cout << ". . . . . . . ." << endl;
//These two lines exit the program.
exit(18);
return(18);
}
//This returns the number raised to the selected power for use in output.
return powe;
}
//This function takes the sum of the digits of the number.
int sum(int s)
{
//This creates a variable to store the sum.
int su = 0;
//This creates a loop control variable.
int n = 0;
//This sets the LCV to equal the number.
n = s;
//This while loop sums the digits of the number.
while (n != 0)
{
//These two lines perform the operations required to sum the digits of the number.
su = (su + n % 10);
n = n/10;
}
//This line returns the sum of the number for use in output.
return su;
}
//This function raises the first digit of the number by the second.
int twodigit(int two)
{
//These two lines create variables for the first and second digit of the number.
int d_one;
int d_two;
//This creates a variable to store the result from the operations.
int dig;
//These two lines split the number into the first and second digits.
d_one = (two / 10);
d_two = (two % 10);
//This raises the first digit to the power of the second digit.
dig = (d_one ^ d_two);
//This returns the answer from the operations to be used in output.
return dig;
}
//This function raises the first two digits of the number by the third digit if the third digit is less than 4.
int threedigit(int three)
{
//These three lines create variables for the three digits in the number.
int di_one;
int di_two;
int di_three;
//These three lines specify which digit of the number is first, second, and third.
di_one = (three / 100 % 10);
di_two = (three / 10 % 10);
di_three = (three % 10);
//This loop raises the first two digits to the power of the third digit.
while (three >= 100)
{
//This if statement checks if the third digit is less than or equal to 4.
if (di_three <= 4)
{
//This creates a variable to store the result of the operation.
int di_four;
//This raises the first two digits to the power of the third digit.
di_four = ( ((di_one * 100) + (di_two * 10)) ^ di_three );
//This returns the result for use in output.
return di_four;
}
//This else statement runs when the third digit in the number is greater than 4.
else
{
//These two lines explain the error.
cout << "The number's third digit is greater than 4." << endl;
cout << "Cannot perform the requested operation." << endl;
//This line restarts the program.
return(0);
}
}
}
//This function checks if the current number is prime.
int prime(int pri)
{
//These two lines create the LCV and a place to store if the number is prime.
int v;
int prim;
//This for loop checks if the number is prime.
for (v = 2; v <= pri; v++)
{
//This if statement stores if the number is prime.
if (pri % v == 0)
{
prim = 1;
}
}
//This if statement outputs if the number is prime.
if (prim == 1)
{
cout << "The number is Prime" << endl;
}
//This statement outputs if the number is not prime.
if (prim != 1)
{
cout << "The number is not Prime" << endl;
}
}
//This function checks if the current number is less than ten.
int lessten(int l)
{
//This creates a variable to store the number plus ten.
int plusten = 0;
//This if statement checks if the number is less than 10.
if (l < 10)
{
//These two lines explain the number is less than 10 and that 10 will be added to the number.
cout << "The number post operation is less than 10." << endl;
cout << "Adding 10 to the number." << endl;
//This adds 10 to the number.
plusten = (l + 10);
//This returns the number plus ten for use in output.
return plusten;
//This tells the user what the number plus ten is.
cout << "The number plus 10 is: " << plusten << endl;
}
//This else statement handles if the number is greater than 10.
else
{
//This tells the user the number is greater than 10.
cout << "The number is greater than 10" << endl;
//This returns the number for use in output.
return l;
}
}
//This function is used to exit the program.
int quit()
{
//These two lines explain that the program is closing.
cout << "Exiting Program" << endl;
cout << ". . . . . . . ." << endl;
//These two lines exit the program.
exit(1);
return(1);
}
//This function generates random numbers between 1 and 99
int randomgen()
{
//This creates a variable to store the random number.
int ran;
//This creates a LCV for the do loop below and sets it equal to 0.
int y = 0;
//This do loop generates the random number.
do
{
//This generates a random time seed.
srand(time(0));
//This generates a random number between 1 and 99.
ran = rand() % 100;
//This while controls the do loop.
}while (y != 9);
//This returns the random number for use in the rest of the program.
return ran;
}
//This starts the main program.
int main()
{
//This creates a variable to control which number is used as the current.
int z = 1;
//This creates a LCV for the do loop below.
int x = 0;
//This creates the variable for user menu selection.
int menu;
//This do loop controls the menu function of the program.
do
{
//These four lines create variables for the random number, the number after operations, and the current number.
int randnum;
int stored;
int num;
//This makes the program only create a random number the first pass through the loop.
if (z < 2)
{
//This runs the random number generator function.
return randomgen();
//This sets the result of the function as the random number.
randnum = randomgen();
//This sets the random number to the current number.
num = randnum;
}
//This makes the program perform operations on the most recent number after operations are performed.
else
{
//This sets the current number equal to the result of the operations performed.
num = stored;
}
//These three lines explain what the program does.
cout << "Welcome to Random Number Opertor." << endl;
cout << "This program allows for multiple opertions to be performed on a randomly generated number." << endl;
cout << "Once an operation has been performed, any addition operation will be performed on the number from the last operation." << endl;
//These eight lines provide the menu options to navigate the program.
cout << "====================== Menu ======================" << endl;
cout << "1. Double the Number" << endl;
cout << "2. Reverse the Digits" << endl;
cout << "3. Raise the Number by the 2, 3, or 4 Power" << endl;
cout << "4. Sum the Digits" << endl;
cout << "5. Raise First Digit by Second Digit(2-Digit Numbers Only)" << endl;
cout << "6. Raise First two Digits by Third Digit if it is less than 4 (3-Digit Numbers Only)" << endl;
cout << "7. Exit" << endl;
//This tells the user the current number.
cout << "The current number is " << num << endl;
//These two lines ask for a menu selection and store the answer in the menu variable.
cout << "Please pick an operation from the menu" << endl;
cin >> menu;
//This if statement runs if the user selects menu option 1.
if (menu == 1)
{
//This passes the current number through the doubling function.
return doub(num);
//This sets the current number to the result of doubling.
num = doub(num);
//This tells the user the result of the operation.
cout << "The number doubled is: " << num << endl;
//This tells the user of the prime number check.
cout << "Checking if number is prime." << endl;
//This passes the current number through the prime number checking function.
return prime(num);
//This tells the user a > 10 < test is being performed on the number.
cout << "Checking if number is greater than 10." << endl;
//This passes the current number through the less than 10 check and operations function if required.
return lessten(num);
//This sets the stored number equal to the current number so the menu can rerun with the number after operations.
stored = num;
}
//This if statement runs if the user selects menu option 2.
if (menu == 2)
{
//This passes the current number through the digit reverse function.
return reverse(num);
//This sets the current number to the result of the function pass.
num = reverse(num);
//This tells the user the reversed number.
cout << "The number reversed is: " << num << endl;
//This tells the user of the prime number check.
cout << "Checking if number is prime." << endl;
//This passes the number through the prime checking function.
return prime(num);
//This tells the user a > 10 < test is being performed on the number.
cout << "Checking if number is greater than 10." << endl;
//This passes the current number through the less than 10 check and operations function if required.
return lessten(num);
//This sets the stored number equal to the current number so the menu can rerun with the number after operations.
stored = num;
}
//This if statement runs if the user selects menu option 3.
if (menu == 3)
{
//This passes the current number throught the function to raise the numbers power by 2, 3, or 4.
return power(num);
//This sets the current number equal to the result of the power function.
num = power(num);
cout << "The number raised to your selected power is: " << num << endl;
//This tells the user of the prime number check.
cout << "Checking if number is prime." << endl;
//This passes the number through the prime checking function.
return prime(num);
//This tells the user a > 10 < test is being performed on the number.
cout << "Checking if number is greater than 10." << endl;
//This passes the current number through the less than 10 check and operations function if required.
return lessten(num);
//This sets the stored number equal to the current number so the menu can rerun with the number after operations.
stored = num;
}
//This if statement runs if the user selects menu option 4.
if (menu == 4)
{
//This passes the current number through the sum function.
return sum(num);
//This sets the sum of the digits equal to the current number.
num = sum(num);
cout << "The sum of the number is: " << num << endl;
//This tells the user of the prime number check.
cout << "Checking if number is prime." << endl;
//This passes the number through the prime checking function.
return prime(num);
//This tells the user a > 10 < test is being performed on the number.
cout << "Checking if number is greater than 10." << endl;
//This passes the current number through the less than 10 check and operations function if required.
return lessten(num);
//This sets the stored number equal to the current number so the menu can rerun with the number after operations.
stored = num;
}
//This if statement runs if the user selects menu option 5.
if (menu == 5)
{
//This passes the current number through the funciton to raise the first digit by the second.
return twodigit(num);
//This stores the result of the function as the current number.
num = twodigit(num);
cout << "The first digit of the number raised to the power of the second is: " << num << endl;
//This tells the user of the prime number check.
cout << "Checking if number is prime." << endl;
//This passes the number through the prime checking function.
return prime(num);
//This tells the user a > 10 < test is being performed on the number.
cout << "Checking if number is greater than 10." << endl;
//This passes the current number through the less than 10 check and operations function if required.
return lessten(num);
//This sets the stored number equal to the current number so the menu can rerun with the number after operations.
stored = num;
}
//This if statement runs if the user selects menu option 6.
if (menu == 6)
{
//This passes the current number through the function to raise the first two digits by the third if the third digit is less than or equal to 4.
return threedigit(num);
//This stores the result of the function as the current number.
num = threedigit(num);
cout << "The first two digits raised to the power of the third is: " << num << endl;
//This tells the user of the prime number check.
cout << "Checking if number is prime." << endl;
//This passes the number through the prime checking function.
return prime(num);
//This tells the user a > 10 < test is being performed on the number.
cout << "Checking if number is greater than 10." << endl;
//This passes the current number through the less than 10 check and operations function if required.
return lessten(num);
//This sets the stored number equal to the current number so the menu can rerun with the number after operations.
stored = num;
}
//This if statement runs if the user selects menu option 7.
if (menu == 7)
{
//This runs the function to exit the program.
return quit();
}
//This if statement handles the user enters something not listed on the menu.
if (menu != 1 && menu != 2 && menu != 3 && menu != 4 && menu != 5 && menu != 6 && menu != 7)
{
//These five lines explain the error and reason for program shutdown.
cout << "Error" << endl;
cout << "Option Selected does not exist." << endl;
cout << "Please enter options between 1-7 only." << endl;
cout << "Exiting Program" << endl;
cout << ". . . . . . . ." << endl;
//These two lines exit the program.
exit(15);
return(15);
}
//This increase the value of the LCV by 1 for each loop pass. This allows for the program to choose between the random number and stored number for operations.
z = z++;
//This while statement controls the do loop.
}while (x > 0);
}
```
糟糕，您在这里有无限循环
//This creates a LCV for the do loop below and sets it equal to 0.
int y = 0;
//This do loop generates the random number.
do
{
//This generates a random time seed.
srand(time(0));
//This generates a random number between 1 and 99.
ran = rand() % 100;
//This while controls the do loop.
}while (y != 9);
y初始化为0，而您在
y!=9时循环。那只是第一个错误，可能还会更多。
错误＃2
int z = 1;
//This makes the program only create a random number the first pass through the loop.
if (z < 2)
{
//This runs the random number generator function.
return randomgen();
//This sets the result of the function as the random number.
randnum = randomgen();
//This sets the random number to the current number.
num = randnum;
}
在
randomgen()中修复无限循环后，您将立即返回...
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