0_0_32138383_2173.cpp: In function 'int main()': 0_0_32138383_2173.cpp:5:21: error: 'a' was not declared in this scope while(~scanf("%d",&a,&b)) ^ 0_0_32138383_2173.cpp:5:24: error: 'b' was not declared in this scope while(~scanf("%d",&a,&b)) ^