選擇結(jié)構(gòu)if基本概念

排序 從大到小
int a,b,c = -1;
printf(“請(qǐng)輸入三個(gè)數(shù)用逗號(hào)隔開");
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;
}
隨機(jī)數(shù)
#include  <stdlib.h>
arc4random_uniform