Run id: 110536

Main.cc: In function 'int main()':
Main.cc:6:23: error: 'strlen' was not declared in this scope
     int s1_l=strlen(s1),s2_l=0; 
                       ^
Main.cc:19:12: error: 's2_l' was not declared in this scope
            s2_l++; 
            ^
Main.cc:24:14: error: 's2_l' was not declared in this scope
     if(s1_l==s2_l){ 
              ^