View Compilation Error

0_0_11915641_5781.cpp: In function `void update(int, int, int, int, int)':
0_0_11915641_5781.cpp:13: error: expected primary-expression before "return"
0_0_11915641_5781.cpp:13: error: expected `;' before "return"
0_0_11915641_5781.cpp: In function `int main()':
0_0_11915641_5781.cpp:31: error: `chat' undeclared (first use this function)
0_0_11915641_5781.cpp:31: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_11915641_5781.cpp:31: error: expected `;' before "cmd"
0_0_11915641_5781.cpp:37: error: `cmd' undeclared (first use this function)
0_0_11915641_5781.cpp:37: error: `strcmp' undeclared (first use this function)