View Compilation Error

0_0_9606842_7740.cpp:4: error: expected init-declarator before "int"
0_0_9606842_7740.cpp:4: error: expected `,' or `;' before "int"
0_0_9606842_7740.cpp: In function `int main()':
0_0_9606842_7740.cpp:18: error: `num' undeclared (first use this function)
0_0_9606842_7740.cpp:18: error: (Each undeclared identifier is reported only once for each function it appears in.)