Why is this program giving error ??

Question

#include <iostream>
using namespace std;

inline int square(int a){
    return a*a;
}
int main(){
    int a;
    cout<<"Enter the value of a"<<end l;
    cin>>a;
    cout<<"The product of a and b is"<<square(a)<<end l;
}

Answer 1

endl is a single word, not two as "end l".

Also, in your last line, you talk about "a and b", but only one value was entered by the user (a), so you're confusing the user.