View Compilation Error

0_0_37069688_7572.cpp:9:1: error: stray '\243' in program
 printf（"%d\n\n",sum）;
 ^
0_0_37069688_7572.cpp:9:1: error: stray '\250' in program
0_0_37069688_7572.cpp:9:1: error: stray '\243' in program
0_0_37069688_7572.cpp:9:1: error: stray '\251' in program
0_0_37069688_7572.cpp: In function 'int main()':
0_0_37069688_7572.cpp:5:21: error: 'a' was not declared in this scope
 while(scanf("%d%d",&a,&b)!=EOF)
                     ^
0_0_37069688_7572.cpp:5:24: error: 'b' was not declared in this scope
 while(scanf("%d%d",&a,&b)!=EOF)
                        ^
0_0_37069688_7572.cpp:9:9: error: expected ';' before string constant
 printf（"%d\n\n",sum）;
         ^
0_0_37069688_7572.cpp:10:5: error: 'o' was not declared in this scope
 sum=o ;
     ^
0_0_37069688_7572.cpp:12:9: error: expected '}' at end of input
 return 0;
         ^