What's wrong with this code?? Is it necessary to set default value to each parameter, if we set any value default??

Question

#include <iostream>
using namespace std;

int sum(int a=42, int b) {
int result = a + b;
return (result);
}

int main() {
int x = 36;
int y = 24;

//calling the function with both parameters
int result = sum(x, y);
cout << result << endl;

//calling the function without a
result = sum(x,y);
cout << result << endl;

return 0;
}

its showing error that it should have default value of "b" also.

Answer 1

if you will put a default value to a parameter you need to put that variable at the final of the parameter list so it should be int sum( int b, int a = 42 ) ...

Answer 2

ya rte radhika

Answer 3

a=42

Answer 4

radhika where u from

Answer 5

no , its not necessary but actually if you are giving value to a parameter then it is must to also give the value to the parameter in right side