Syntax
//Function - Pass By Reference
void fn_name(int *var1,int *var2)
{
// Code
}
//Main Code- Pass By Reference
fn_name(&orginal_var1,&orginal_var2);
Simple Example Program for Area Of Circle Using Pointer
/*##Simple Example Program for Area Of Circle Using Pointer In C*/
/*##Simple Area Of Circle Program,pointers Example C Programming*/
/*##Pass By Reference Function Example Program In C Programming*/
// Declare Area of Circle Function Using Pointer
void area_of_circle(float *value, float *result) {
*result = 3.14 * (*value) * (*value);
}
#include<stdio.h>
int main() {
float radius, area;
printf("\nEnter the radius of Circle : ");
scanf("%f", &radius);
//area = 3.14 * radius * radius;
area_of_circle(&radius, &area);
printf("\nArea of Circle : %f", area);
return (0);
}
Sample Output
Enter the radius of Circle : 5
Area of Circle : 78.500000
