View Compilation Error

0_0_35813937_14909.cpp: In function 'int main()':
0_0_35813937_14909.cpp:18:11: error: 'sg' was not declared in this scope
     sg(100);
           ^
0_0_35813937_14909.cpp:26:1: error: expected '}' at end of input
 }
 ^