c语言 输入直角三角形的两条直角边a，b

Question

Answer 1

 
#include <stdio.h>
#include <math.h>
int main() {
 double a,b,c,A,B;
 scanf("%lf%lf",&a,&b);
 c=sqrt(a*a+b*b);
 A=atan(a,b)/M_PI*180;
 B=90.0-A;
 printf("c=%.1lf\np=%.1lf\ns=%.1lf\nA=.0lf\nB=%.0lf\nA=%.1lf\nB=%.1lf\n",c,a+b+c,a*b/2,A,B,A,B);
 return 0;
}