funds4.c

c primer plus 第五版 的源代码

/* funds4.c -- passing an array of structures to a function */
#include <stdio.h>
#define FUNDLEN 50
#define N 2

struct funds {
    char   bank[FUNDLEN];
    double bankfund;
    char   save[FUNDLEN];
    double savefund;
};

double sum(const struct funds money[], int n);

int main(void)
{
    struct funds jones[N] = {
        {
            "Garlic-Melon Bank",
            3024.72,
            "Lucky's Savings and Loan",
            9237.11
        },
        {
            "Honest Jack's Bank",
            3534.28,
            "Party Time Savings",
            3203.89
        }
    };

    printf("The Joneses have a total of $%.2f.\n",
           sum(jones,N));
    
    return 0;
}

double sum(const struct funds money[], int n)
{
    double total;
    int i;

    for (i = 0, total = 0; i < n; i++)
        total += money[i].bankfund + money[i].savefund;
    
    return(total);
}