C语言怎么用四个if找出4个数字中的最大和最小值?答:C语言程序:include <stdio.h>void main(){int a, b, c, d;int max1, max2, max3, min1, min2, min3;printf("input a, b, c, d : ");scanf("%d%d%d", &a, &b, &c, &d);if(a >= b){max1 = a;min1 = b;}else {max1 = b;min1 = a;}if(c >= d){max...