View Compilation Error

544098_0_0_4423.cpp: In function `int main(int, char**)':
544098_0_0_4423.cpp:37: error: `re' undeclared (first use this function)
544098_0_0_4423.cpp:37: error: (Each undeclared identifier is reported only once for each function it appears in.)
544098_0_0_4423.cpp:37: error: expected `;' at end of input
544098_0_0_4423.cpp:37: error: expected `}' at end of input