Question

c语言：输入几何形状，求相应周长和面积

# include <stdio.h>
# include <math.h>
# include <windows.h>
# include <string.h>
# define pi 3.1415926
int main(void)
{
char n[2];
double a,b,r,s,c;
printf("enter n:");
scanf("%s",n);
if(strcmp(n,"rectangle")==0)

printf("enter a:");
scanf("%lf",&a);
printf("enter b:");
scanf("%lf",&b);
s=a*b;
c=2*(a+b);
if(strcmp(n,"circular")==0)
printf("enter r:");
scanf("%lf",&r);
s=pi*pow(r,2);
c=2*pi*r;
printf("s=%.2f,c=%.2f",s,c);

system("pause");

return 0;
}
求大神们看看哪里出问题了，感激不尽，c新手

若以下回答无法解决问题，邀请你更新回答

Answer 1

if判断只对后面一行起作用，｛｝哪去了

Answer 2

char n[2];

.........你的字符长度是多少 这么小完全放不下