Run id: 124742

Main.cc: In function 'int main()':
Main.cc:25:5: error: 'c' was not declared in this scope
  if(c-1>=32 && c-1<=126){
     ^
Main.cc:30:5: error: 'c' was not declared in this scope
  if(c+1>=32 && c+1<=126){
     ^
Main.cc:24:7: warning: unused variable 'a' [-Wunused-variable]
  char a=getchar();
       ^