0_0_16524366_29042.c: In function 'main': 0_0_16524366_29042.c:5:22: error: invalid suffix "a" on integer constant while (scanf("%d %d"7a,&b)!=EOF&&(a!=0&&b!=0)) ^ 0_0_16524366_29042.c:5:22: error: expected ')' before numeric constant