View Compilation Error

0_0_1724889_31450.cpp: In function `int mex(int)':
0_0_1724889_31450.cpp:7: error: `nbsp' undeclared (first use this function)
0_0_1724889_31450.cpp:7: error: (Each undeclared identifier is reported only once for each function it appears in.)
0_0_1724889_31450.cpp:12: error: break statement not within loop or switch
0_0_1724889_31450.cpp: At global scope:
0_0_1724889_31450.cpp:22: error: expected constructor, destructor, or type conversion before ';' token
0_0_1724889_31450.cpp: In function `int main()':
0_0_1724889_31450.cpp:26: error: `nbsp' undeclared (first use this function)
0_0_1724889_31450.cpp:48: error: expected primary-expression before "else"
0_0_1724889_31450.cpp:48: error: expected `;' before "else"