程序代码：

int max(int x, int y)
{
    return(x > y ? x : y);
}

int min(int x, int y)
{
    return(x > y ? y : x);
}

#include<stdio.h>
int main()
{
    int max(int x, int y);
    int min(int x, int y);
    int(*p)(int x, int y);
    int a = 1, b = 2, n, c;
    int flag = 0;
    while (flag == 0)
    {
        printf("choose 1 or 2 in your select:\n");
        scanf_s("%d", &n);
        if (n == 1 || n == 2) flag = 1;
        else
        {
            printf("There is an error in your enter,please try again!\n");
            flag = 0;
        }
    }
    if (n == 1)
        p = max;
    else if (n == 2)
        p = min;
    c = (*p)(a, b);
    printf("a=%d,b=%d\n", a, b);
    if (n == 1) printf("max=%d\n", c);
    else if (n == 2) printf("min=%d\n", c);
    return 0;
}

[此贴子已经被作者于2017-1-14 09:39编辑过]

程序代码：

int max(int x, int y)
{
    return(x > y ? x : y);
}

int min(int x, int y)
{
    return(x > y ? y : x);
}

#include<stdio.h>
int main()
{
    int max(int x, int y);
    int min(int x, int y);
    int(*p)(int x, int y) = NULL;
    int a = 1, b = 2, n, c;
    int flag = 0;
    while (flag == 0)
    {
        printf("choose 1 or 2 in your select:\n");
        scanf_s("%d", &n);
        if (n == 1 || n == 2) flag = 1;
        else
        {
            printf("There is an error in your enter,please try again!\n");
            flag = 0;
        }
    }
    if (n == 1) p = max;
    else if (n == 2) p = min;
    c = (*p)(a, b);
    printf("a=%d,b=%d\n", a, b);
    if (n == 1) printf("max=%d\n", c);
    else if (n == 2) printf("min=%d\n", c);
    return 0;
}

[此贴子已经被作者于2017-1-14 09:38编辑过]