View Compilation Error

1_374_2242_21351.cpp: In function `int main()':
1_374_2242_21351.cpp:23: error: return-statement with no value, in function returning 'int'
1_374_2242_21351.cpp:25: error: return-statement with no value, in function returning 'int'
1_374_2242_21351.cpp:27: error: return-statement with no value, in function returning 'int'