View Compilation Error

0_0_18618688_29823.cpp: In function 'int toint(char)':
0_0_18618688_29823.cpp:4:2: error: 'nbsp' was not declared in this scope
     if(a>='0' && a<='9')
  ^
0_0_18618688_29823.cpp: In function 'int main()':
0_0_18618688_29823.cpp:12:2: error: 'nbsp' was not declared in this scope
     char sa[1005],sb[1005];
  ^