swap function

call by value

void swap (int c , int d){

int temp=c;

c=d;

d=temp;

}

int main(){

int a=5,b=10;

swap(a,b);

printf(" %d %d ", a,b);

}

call by address

void swap (int *c , int *d){

int temp=*c;

*c=*d;

*d=temp;

}

int main(){

int a=5,b=10;

swap(&a,&b);

printf(" %d %d ", a,b);

}

call by reference (Only C++)