View Compilation Error

0_0_31677308_1612.cpp:10:1: error: stray '\243' in program
 a=b；
 ^
0_0_31677308_1612.cpp:10:1: error: stray '\273' in program
0_0_31677308_1612.cpp: In function 'int main()':
0_0_31677308_1612.cpp:5:41: error: 'scanf_s' was not declared in this scope
 while(scanf_s("%c%c%c%*c",&a,1,&b,1,&c,1)!=EOF)
                                         ^
0_0_31677308_1612.cpp:11:1: error: expected ';' before 'b'
 b=tmp;
 ^
0_0_31677308_1612.cpp:27:1: error: 'return0' was not declared in this scope
 return0;
 ^