程序代码：

#include <stdio.h>

int main(void)
{
    
    int max(int, int);
    int min(int, int);
    
    int process(int x, int y, int (*p)());
    
    int a;
    int b;

    printf("请输入两个数据：\n");
    scanf("%d %d", &a, &b);
    
    
    process (a,b,max);
    printf("max = %d",max);

    return 0;

}

int process(int x, int y,int f())
{
    return  f(x,y);
}


int max(int x, int y)
{
    int z;

    if(x > y)
    {
        z = x;
    }
    else 
    {
        z = y;
    }
    
    return z;
}


int min(int x, int y)
{
    int z;

    if (x < y)
    {
        z = x;
    }
    else 
    {
        z = y;
    }

    return z;
}

[此贴子已经被作者于2017-3-31 21:30编辑过]

程序代码：

#include <stdio.h>

int main(void)
{
    
    int max(int, int);
    int min(int, int);
    int sum(int, int);
    
    
    void process(int x, int y, int (*p)());
    
    int a;
    int b;

    printf("请输入两个数据：\n");
    scanf("%d %d", &a, &b);
    
    printf("max = ");
    process (a,b,max);
    
    printf("min = ");
    process (a,b,min);

    printf("sum = ");
    process (a,b,sum);

    return 0;

}

void process(int x, int y,int f())
{
     printf("%d",f(x,y));


}


int max(int x, int y)
{
    int z;

    if(x > y)
    {
        z = x;
    }
    else 
    {
        z = y;
    }
    
    return z;
}


int min(int x, int y)
{
    int z;

    if (x < y)
    {
        z = x;
    }
    else 
    {
        z = y;
    }

    return z;
}

int sum(int x, int y)
{
    int z;

    z = x + y;

    return z;
}