检查序列是否单调递增的代码

Question

我需要输入一个数字(用户输入-1退出)，程序需要判断它是否是递增的单调序列。

我是在do-while循环中完成的，我知道如果我想检查它是否在增加，我需要检查前一个数字，然后比较前一个以及当前号码。

但是，我仍然很难想象循环的过程。

这是代码:

#include <stdio.h>

void main()

{

    int num, i = 0, numPrev = 0;
    printf("Enter a number:");

    do {

        scanf("%d", &num);

        numPrev = num;
        i++;

        if (num > numPrev) 

    } while (num != -1);

        printf("The Serias is Monotinic Acsending\n");

}

Answer 1

您应该进行以下更改。我已在需要的地方添加了评论。假设您希望阅读整个输入!

#include <stdio.h>

int main(void)//refer the link given below

{

    int  i = 0, numCurr, numPrev = 0; //for storing current no. and previous no.
    int flag = 0;
    printf("Enter input:");

    do {

        scanf("%d", &numCurr);

        if(i != 0 && numCurr != -1 && numPrev > numCurr)//so that comparison begins from the second element
            flag = 1;

        numPrev = numCurr;
        i++;

    } while (numCurr != -1);

    if(flag == 0)printf("The Serias is Monotinic Acsending\n");
    else    printf("The Serias is not Monotinic Acsending\n");  

    return 0;
 }

也看看:What should main() return in C and C++?