View Compilation Error

0_0_11353743_28290.cpp:19: error: `M' was not declared in this scope
0_0_11353743_28290.cpp: In function `int main()':
0_0_11353743_28290.cpp:25: error: `s' undeclared (first use this function)
0_0_11353743_28290.cpp:25: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_11353743_28290.cpp:28: error: `i' undeclared (first use this function)