View Compilation Error

0_0_1187933_19240.cpp: In function `void solve()':
0_0_1187933_19240.cpp:23: error: expected init-declarator before '?' token
0_0_1187933_19240.cpp:23: error: expected `,' or `;' before '?' token
0_0_1187933_19240.cpp:25: error: `en' undeclared (first use this function)
0_0_1187933_19240.cpp:25: error: (Each undeclared identifier is reported only once for each function it appears in.)