View Compilation Error

0_0_19215463_10316.cpp:18:9: error: stray '\302' in program
             //出现重复
         ^
0_0_19215463_10316.cpp:18:9: error: stray '\240' in program
0_0_19215463_10316.cpp:18:9: error: stray '\302' in program
0_0_19215463_10316.cpp:18:9: error: stray '\240' in program
0_0_19215463_10316.cpp: In function 'int main()':
0_0_19215463_10316.cpp:7:24: error: 'scanf' was not declared in this scope
     while(scanf("%d",&n)!=EOF)
                        ^
0_0_19215463_10316.cpp:7:27: error: 'EOF' was not declared in this scope
     while(scanf("%d",&n)!=EOF)
                           ^
0_0_19215463_10316.cpp:9:17: error: 'getchar' was not declared in this scope
         getchar();
                 ^
0_0_19215463_10316.cpp:39:36: error: 'printf' was not declared in this scope
         printf("%d %d %d\n",cnt,l,r);
                                    ^