1、最大值

#include <stdio.h>

int main(void)
{
    int a,b,c,d,e,f,g;
    puts("please input six integers: ");
    printf("a:"); scanf("%d",&a);
    printf("b:"); scanf("%d",&b);
    printf("c:"); scanf("%d",&c);
    printf("d:"); scanf("%d",&d);
    printf("e:"); scanf("%d",&e);
    printf(
 
"f:"); scanf("%d",&f);
    
    g = a;
    if ( b > g)
       g=b;
    if ( c > g)
       g=c;
    if ( d > g)
       g=d;
    if ( e > g)
       g=e;
    if ( f > g)
       g=f;
    printf("larger: %d\n",g);
    return 0;
}

2、最小值

#include <stdio.h>

int main(void)
{
    int
 
 a,b,c,d,e,f,g;
    puts("please input six integers: ");
    printf("a:"); scanf("%d",&a);
    printf("b:"); scanf("%d",&b);
    printf("c:"); scanf("%d",&c);
    printf("d:"); scanf("%d",&d);
    printf("e:"); scanf("%d",&e);
    printf("f:"); scanf("%d",&f);
    
    g = a;
    
 
if ( b < g)
       g=b;
    if ( c < g)
       g=c;
    if ( d < g)
       g=d;
    if ( e < g)
       g=e;
    if ( f < g)
       g=f;
    printf("little: %d\n",g);
    return 0;
}