0_0_22637945_12589.cpp: In function 'int main()': 0_0_22637945_12589.cpp:6:18: error: 'a' was not declared in this scope scanf("%d%",&a,&b) ^ 0_0_22637945_12589.cpp:6:21: error: 'b' was not declared in this scope scanf("%d%",&a,&b) ^