View Compilation Error

0_0_17541530_27026.c: In function 'main':
0_0_17541530_27026.c:3:31: error: 'EOF' undeclared (first use in this function)
    while(scanf("%d%d",&m,&n)!=EOF){
                               ^
0_0_17541530_27026.c:3:31: note: each undeclared identifier is reported only once for each function it appears in