c语言中取最大、最小值

1、最大值

#include <stdio.h>

int main(void)
{
    int a,b,c,d,m;
    puts("please input four integers.");
    printf("a = "); scanf("%d", &a);
    printf("b = "); scanf("%d", &b);
    printf("c = "); scanf("%d", &c);
    printf("d = "); scanf("%d", &d);
    
    m = a;
    if (m == b && m == c && m == d)
        puts("the integers are equal!\a");
    else
    {
        if (b > m)
            m = b;
        if (c > m)
            m = c;
        if (d > m)
            m = d;
        printf("the larger is %d.\n", m);
    }
    return 0;
}

 

2、最小值

#include <stdio.h>

int main(void)
{
    int a,b,c,d,m;
    puts("please input four integers.");
    printf("a = "); scanf("%d", &a);
    printf("b = "); scanf("%d", &b);
    printf("c = "); scanf("%d", &c);
    printf("d = "); scanf("%d", &d);
    
    m = a;
    if (m == b && m == c && m ==d)
        puts("the integers are equal!\a");
    else
    {
        if (b < m)
            m = b;
        if (c < m)
            m = c;
        if (d < m)
            m = d;
        printf("the smaller integer is %d.\n", m);
    }
    return 0;
}