View Compilation Error

0_0_30993534_9216.cpp: In function 'int main()':
0_0_30993534_9216.cpp:5:26: error: 'm' was not declared in this scope
     while(scanf("%d %d",&m,&n) != EOF)
                          ^
0_0_30993534_9216.cpp:5:29: error: 'n' was not declared in this scope
     while(scanf("%d %d",&m,&n) != EOF)
                             ^