0_0_22637976_7976.cpp: In function 'int main()': 0_0_22637976_7976.cpp:6:19: error: 'a' was not declared in this scope scanf("%d%d",&a,&b); ^ 0_0_22637976_7976.cpp:6:22: error: 'b' was not declared in this scope scanf("%d%d",&a,&b); ^