View Compilation Error

0_0_1569720_8490.cpp: In function `int main()':
0_0_1569720_8490.cpp:5: error: too many arguments to function `int change()'
0_0_1569720_8490.cpp:27: error: at this point in file
0_0_1569720_8490.cpp:28: error: `mess' undeclared (first use this function)
0_0_1569720_8490.cpp:28: error: (Each undeclared identifier is reported only once for each function it appears in.)