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C- 通过函数将 tmp 值传递给另一个函数

转载 作者:太空宇宙 更新时间:2023-11-04 02:09:53 26 4
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在这个程序中:

#include <stdio.h>
#include <stdlib.h> /* for malloc */
#include <ctype.h>

#define STD_WORK_WEEK 40
#define OVERTIME_RATE 1.5


struct employee
{
char first_name[10];
char last_name[10];
long id_number;
float wage;
float hours;
float overtime;
float gross;

struct employee *next;
};

/************************************************************************/
/* Function: Gross_pay_calc */
/* */
/* Purpose: Calculates gross pay of an employee using hours and */
/* wage data that is already stored */
/* */
/* */
/* Parameters: wage - Array of employee wages */
/* hours- Array of number of hours worked by an employee */
/* grossPay- Gross Pay of an employee */
/* size-number of employees to process */
/* */
/* Returns: Stores grossPay to be referenced in another function output */
/* */
/************************************************************************/

/* Function call to calculate gross pay. */
void Gross_pay_calc (struct employee *emp1)
{
/*Local Variable Declaration */
struct employee *tmp; /* tmp pointer value to current node */

if ( tmp->hours <= STD_WORK_WEEK ) /* Calculates grossPay based on <40 or >40 for OT */

{
tmp->gross = tmp->wage*tmp->hours;
}

else

{
tmp->gross = (tmp->wage*STD_WORK_WEEK)+((tmp->hours-STD_WORK_WEEK)* (tmp->wage*OVERTIME_RATE));
}

}

/*-----------------------------------------------------------------------------*/
/* */
/* FUNCTION: print_list */
/* */
/* DESCRIPTION: This function will print the contents of a linked */
/* list. It will traverse the list from beginning to the */
/* end, printing the contents at each node. */
/* */
/* PARAMETERS: emp1 - pointer to a linked list */
/* */
/* OUTPUTS: None */
/* */
/* CALLS: None */
/* */
/*-----------------------------------------------------------------------------*/
void print_list(struct employee *emp1)
{
struct employee *tmp; /* tmp pointer value to current node */
int i = 0; /* counts the nodes printed */

printf ("--------------------------------------------------------------\n"); /*Print Header To Screen */
printf (" Name \t Clock# \t Wage \t Hours \t OT \t Gross\n");
printf ("---------------------------------------------------------------\n");

/* Start a beginning of list and print out each value */
/* loop until tmp points to null (remember null is 0 or false) */

for(tmp = emp1; tmp ; tmp = tmp->next)
{
i++;

/* TODO - print other members as well */
printf("\n %s %s %6d %8.2f %5.2f %7.2f\n",tmp->first_name,tmp->last_name,tmp->id_number,
tmp->wage,tmp->hours,tmp->gross);

}

printf("\n\nTotal Number of Employees = %d\n", i);

}

/*----------------------------------------------------------------------------*/
/* */
/* FUNCTION: main */
/* */
/* DESCRIPTION: This function will prompt the user for an employee */
/* id and wage until the user indicates they are finished. */
/* At that point, a list of id and wages will be */
/* generated. */
/* */
/* PARAMETERS: None */
/* */
/* OUTPUTS: None */
/* */
/* CALLS: print_list */
/* */
/*----------------------------------------------------------------------------*/
int main ()
{

char answer[80]; /* to see if the user wants to add more employees */
int more_data = 1; /* flag to check if another employee is to be processed */
char value; /* gets the first character of answer */

struct employee *current_ptr, /* pointer to current node */
*head_ptr; /* always points to first node */

/* Set up storage for first node */
head_ptr = (struct employee *) malloc (sizeof(struct employee));
current_ptr = head_ptr;

while (more_data)
{
/* Read in Employee ID and Hourly Wage */

printf("\nEnter employee ID: ");
scanf("%li", & current_ptr -> id_number);

printf("\nEnter employee weekly wage: ");
scanf("%f", & current_ptr -> wage);

printf("\nEnter employee weekly hours: ");
scanf("%f", & current_ptr -> hours);

printf("\nEnter First Name: ");
scanf("%s", & current_ptr -> first_name);

printf("\nEnter Last Name: ");
scanf("%s", & current_ptr -> last_name);

printf("Would you like to add another employee? (y/n): ");
scanf("%s", answer);

Gross_pay_calc(head_ptr);

/* Ask user if they want to add another employee */
if ((value = toupper(answer[0])) != 'Y')
{
current_ptr->next = (struct employee *) NULL;
more_data = 0;
}
else
{
/* set the next pointer of the current node to point to the new node */
current_ptr->next = (struct employee *) malloc (sizeof(struct employee));
/* move the current node pointer to the new node */
current_ptr = current_ptr->next;
}
} /* while */

/* print out listing of all employee id's and wages that were entered */


print_list(head_ptr);

printf("\n\nEnd of program\n");

return 0;
}

我正在尝试使用 gross_pay_calc 来计算我在请求中输入的每位员工的总工资。但是,当我尝试在 print_list 函数中打印 tmp->gross 值时,它无法正确计算。我不确定为什么会发生这种情况,希望就如何使其计算准确提出任何建议!

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