C Program to find area and circumference of circle

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C Program to find area and circumference of circle

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#include<stdio.h>   int main() {      int rad;    float PI = 3.14, area, ci;      printf("\nEnter radius of circle: ");    scanf("%d", &rad);      area = PI * rad * rad;    printf("\nArea of circle : %f ", area);      ci = 2 * PI * rad;    printf("\nCircumference : %f ", ci);      return (0); }

Output :

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Enter radius of a circle : 1 Area of circle : 3.14 Circumference  : 6.28