C program compilation error

general
1

when this code is compiled to calculate the return value of f(p,p), if the value of p is initialized to 5 before the call? Note that
the first parameter is passed by reference, whereas the second parameter is passed by
value
#include<stdio.h>
int f(int *p ,int f);
int main()
{
int p=5,y;
y=f(&p,p);
printf("%d",y);
return 0;
}
int f(int &x,int c)
{
c = c - 1;
if (c==0)
return 1;
else
x = x + 1;
return f(x,c) * x;
}

but i am getting an error
what is wrong with my code??

2

Your function prototype and function definition are different. In prototype you have used pointer while you have used aliasing in definition. Use aliasing in prototype also.

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