math.h的运用
重载运算符
http://www.nowcoder.com/questionTerminal/7b1e4ffc39604be3b15959ce329da490
#include <stdio.h>
#include <math.h>
#define PI 3.1415926
int main(){
int n,a,b;
while(scanf("%d",&n)!=EOF){
while(n--){
scanf("%d%d",&a,&b);
printf("%.2f\n",sin((float)(a-b)*PI/180));
}
}
} (•̀ᴗ•́)و
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