0_0_22165491_19158.cpp: In function 'int main()': 0_0_22165491_19158.cpp:5:23: error: 'd' was not declared in this scope while(scanf("%d%d",&a&d)!=EOF) ^ 0_0_22165491_19158.cpp:9:9: error: expected '}' at end of input return 0; ^