View Compilation Error

0_0_38302634_19850.cpp: In function 'int main()':
0_0_38302634_19850.cpp:8:23: error: 'm' was not declared in this scope
        scanf("%d %d",&m,&n);
                       ^
0_0_38302634_19850.cpp:8:26: error: 'n' was not declared in this scope
        scanf("%d %d",&m,&n);
                          ^