选择结构if基本概念
排序 从大到小
int a,b,c = -1;
printf(“请输入三个数用逗号隔开");
scanf(“%i,%i,%i”,&a,&b,&c);
int temp = -1;
if(a<b){
temp = a;
a = b;
b = temp;
}
if(a<c){
temp = a;
a = c;
c = temp;
}
if(b<c){
temp = b;
b = c;
c = temp;
}
随机数
#include <stdlib.h>
arc4random_uniform
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