View Compilation Error

0_0_24782925_23381.cpp:22:7: error: 'INf' was not declared in this scope
 }line[INf];
       ^
0_0_24782925_23381.cpp: In function 'void AddLine(unsigned int, unsigned int, unsigned int, bool)':
0_0_24782925_23381.cpp:24:2: error: 'line' was not declared in this scope
  line[lcnt].x=x;
  ^
0_0_24782925_23381.cpp: In function 'int main()':
0_0_24782925_23381.cpp:75:10: error: 'line' was not declared in this scope
   memset(line,0,sizeof(line));
          ^