View Compilation Error

0_0_16978238_18227.cpp:6:5: error: stray '\243' in program
     while(scanf("%d%d",&a,&b)，a&&b!=0)
     ^
0_0_16978238_18227.cpp:6:5: error: stray '\254' in program
0_0_16978238_18227.cpp: In function 'int main()':
0_0_16978238_18227.cpp:6:32: error: expected ')' before 'a'
     while(scanf("%d%d",&a,&b)，a&&b!=0)
                                ^
0_0_16978238_18227.cpp:6:39: error: expected ';' before ')' token
     while(scanf("%d%d",&a,&b)，a&&b!=0)
                                       ^