View Compilation Error

0_0_16268001_8610.cpp: In function 'char* f(int)':
0_0_16268001_8610.cpp:283:13: error: 'result' was not declared in this scope
   _i64toa(t,result,10); 
             ^
0_0_16268001_8610.cpp:296:16: error: 'result' was not declared in this scope
   Add(res,a[4],result); 
                ^
0_0_16268001_8610.cpp:298:9: error: 'result' was not declared in this scope
  return result;
         ^