View Compilation Error

0_0_31219794_18773.cpp:5:8: error: stray '\243' in program
        while(scanf("%d"，&n)!=eof)
        ^
0_0_31219794_18773.cpp:5:8: error: stray '\254' in program
0_0_31219794_18773.cpp: In function 'int main()':
0_0_31219794_18773.cpp:5:27: error: invalid operands of types 'const char [3]' and 'int' to binary 'operator&'
        while(scanf("%d"，&n)!=eof)
                           ^
0_0_31219794_18773.cpp:5:28: error: 'scanf' was not declared in this scope
        while(scanf("%d"，&n)!=eof)
                            ^
0_0_31219794_18773.cpp:5:31: error: 'eof' was not declared in this scope
        while(scanf("%d"，&n)!=eof)
                               ^
0_0_31219794_18773.cpp:7:14: error: expected ';' before ')' token
   for(n>0;n++)
              ^
0_0_31219794_18773.cpp:8:4: error: 'sum' was not declared in this scope
    sum=0;
    ^
0_0_31219794_18773.cpp:9:7: error: 'sum' was not declared in this scope
       sum=sum+n;
       ^
0_0_31219794_18773.cpp:10:22: error: 'printf' was not declared in this scope
   printf("%d\n\n",sum);
                      ^