程序代码：

#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define N 15

void jiafa(char a[], char b[], int f[]);

int main()
{
    int i = 0;
    char a[N] = { 0 }, b[N] = { 0 };
    int f[N] = { 0 };
    printf("please inter a[]:");
    gets(a);
    
    printf("please inter b[]:");
    gets(b);
    
    jiafa(a, b, f);
    
    int *p = f;
    while (*p == 0) p++;
    while (p !=(f+15)) printf("%d", *p++);
    
    system("pause");
    return 0;
}


void jiafa(char a[], char b[], int f[])
{
    int i, lena, lenb,j;
    int d[N] = { 0 };
    int e[N] = { 0 };
    //int f[N];

    lena = strlen(a);
    for (i = 0; i < lena; i++)
    {
        d[N - 1 - i] = a[lena-i-1] - '0';
    }
    
    lenb = strlen(b);
    for (i = 0; i < lenb; i++)
    {
        e[N - 1 - i] = b[lenb-i-1] - '0';
    }
    
    for (i = 0; i < N; i++)
    {
        f[N - i - 1] = f[N-i-1] + d[N - i - 1] + e[N - 1 - i];
        
        for ( j= 0; j < N; j++)
        {
            if (f[N - 1 - j] >= 10)
            {
                f[N - j - 1] = f[N - j - 1] % 10;
                f[N - j - 2] += 1;
            }
        }
    }
}