#include <stdio.h>
#define pai 3.14159
#define r 5.33
int main()
{ printf("circumference=%f\n", pai * r * r);
printf("area=%f\n", 2 * pai * r);
reture 0;
}
#include <stdio.h>
#define pai 3.14159
#define r 5.33
int main()
{ printf("circumference=%f\n", pai * r * r);
printf("area=%f\n", 2 * pai * r);
reture 0;
}
reture-->return单词你写错了