Example

int getNum(){
return 5;
}

void main( int argc, char* argv[]) {
while( a = getNum() ) {
cout << "A is still 5";
}
}

Solution

If the assignment is an error, change it to be a comparison. Otherwise, do the assignment outside the conditional statement.

int getNum(){
return 5;
}

void main( int argc, char* argv[]) {
int a = 5;
while( a == getNum() ) {
cout << "A is still 5";
}
}