View Compilation Error

0_0_3021148_6358.cpp:4: error: `main' must return `int'
0_0_3021148_6358.cpp: In function `int main(...)':
0_0_3021148_6358.cpp:5: error: expected init-declarator before "n"
0_0_3021148_6358.cpp:5: error: expected `,' or `;' before "n"
0_0_3021148_6358.cpp:8: error: `n' undeclared (first use this function)
0_0_3021148_6358.cpp:8: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_3021148_6358.cpp:9: error: `s' undeclared (first use this function)
0_0_3021148_6358.cpp:9: error: `i' undeclared (first use this function)