View Compilation Error

0_0_3189852_17255.cpp: In function `int main()':
0_0_3189852_17255.cpp:51: error: expected `;' before "a"
0_0_3189852_17255.cpp:52: error: `a' undeclared (first use this function)
0_0_3189852_17255.cpp:52: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_3189852_17255.cpp:52: error: `b' undeclared (first use this function)