Run id: 3127

Main.cc: In function 'int Prime_number(int)':
Main.cc:5:26: error: 'sqrt' was not declared in this scope
     for(int i=2;i<=sqrt(n);i++){
                          ^
Main.cc: In function 'int main()':
Main.cc:11:20: error: 'm' was not declared in this scope
     for(int i=6;i<=m;i+=2){
                    ^