View Compilation Error

0_0_9553072_3177.cpp: In function `void prim()':
0_0_9553072_3177.cpp:34: error: `f' undeclared (first use this function)
0_0_9553072_3177.cpp:34: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_9553072_3177.cpp:34: error: expected `;' at end of input
0_0_9553072_3177.cpp:34: error: expected `}' at end of input
0_0_9553072_3177.cpp:34: error: expected `}' at end of input