View Compilation Error

0_0_21691844_23807.c: In function 'main':
0_0_21691844_23807.c:1:79: error: 'ans' undeclared (first use in this function)
 main(T,i,x,a){scanf("%d",&T);while(T--){scanf("%d",&x),x--;for(i=1;i*i<x;i++) ans+=x%i==0;printf("%d\n",ans*2);}}
                                                                               ^
0_0_21691844_23807.c:1:79: note: each undeclared identifier is reported only once for each function it appears in