View Compilation Error

0_0_7936527_15966.cpp: In function `void bfs()':
0_0_7936527_15966.cpp:19: error: `i' undeclared (first use this function)
0_0_7936527_15966.cpp:19: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_7936527_15966.cpp:36: error: expected primary-expression before "int"
0_0_7936527_15966.cpp:36: error: expected `;' before "int"
0_0_7936527_15966.cpp:49: error: expected `}' at end of input
0_0_7936527_15966.cpp:49: error: expected `}' at end of input
0_0_7936527_15966.cpp:49: error: expected `}' at end of input