View Compilation Error

0_0_36783541_10934.c: In function 'main':
0_0_36783541_10934.c:9:12: error: 'num' undeclared (first use in this function)
     memset(num,1,sizeof(num));
            ^
0_0_36783541_10934.c:9:12: note: each undeclared identifier is reported only once for each function it appears in