Main.cc:10:5: error: stray '\302' in program return 0; } ^ Main.cc:10:5: error: stray '\240' in program Main.cc: In function 'int main()': Main.cc:5:19: warning: ignoring return value of 'int scanf(const char*, ...)', declared with attribute warn_unused_result [-Wunused-result] scanf("%d",&a); ^