#include <stdio.h>

int main() {
    float a,ar,pr;
    float area(float);
    float pere(float);
    printf("\nEnter side a square:");
    scanf("%f",&a);
    ar=area(a);
    pr=pere(a);
    
    printf("\n AREA = %f & PEREMETER = %f",ar,pr);
    return 0;
}

float area(float a)
{
    float ar;
    ar= a*a;
    return(ar);
    
}

float pere(float a)
{
    float pr;
    pr=4*a;
    return(pr);
}