给出n组数据，每组数据3个数，求这3个数的最大数。
样例输入：2 1 6
          2 1 3
          7 15 6
样例输出：6
          3
          15

#include <stdio.h>

#define N 3

int main(int argc, const char *argv[])
{
    int i = 0;
    int a[N];

    while(scanf("%d %d %d", &a[0], &a[1], &a[2])){
        for (i = 0; i < N-1; i++){
            if(a[i] > a[i+1]){
                a[i]   ^= a[i+1];
                a[i+1] ^= a[i];
                a[i]   ^= a[i+1];
            }        
        }

        printf("%d\n", a[2]);
    }

    return 0;
}

感觉取巧了

to 3楼：
仅就此题而言，你烦琐了
而且你的 scanf返回值用的不对，如果只读取了两个整数，就会出现bug
#include <stdio.h>
int main(void)
{
    int max = 0, n = 0, a = 0, b = 0, c = 0;
    if( 1 != scanf("%d", &n) )
        return 1;
    while( '\n' != (c = getchar()) && EOF != c )
        NULL;
    while( n-- > 0 )
        if( 3 == scanf("%d %d %d", &a, &b, &c) ) {
            max = a > b ? a : b;
            max = max > c ? max : c;
            printf("%d\n", max);
        }
        else
            while( '\n' != (c = getchar()) && EOF != c )
                NULL;
    return 0;
}

[此贴子已经被作者于2017-8-10 00:45编辑过]