Here's the fixed code.
#include <stdio.h> int main() { float radius; printf("Enter radius: "); scanf("%f",&radius); float area = 3.14 * radius * radius; printf("The area is %f\n", area); return 0; }
#include<stdio.h>int main(){ Float a,c; //put float or double printf("\n Enter radius: "); scanf("%d",&a); c=3.14*a*a; printf("radius is %d",c);}
use float intead of integer.
#include<stdio.h>int main(){ float a,c; printf("\n Enter radius: "); scanf("%f",&a); c=3.14*a*a; printf("radius is %f",c);}