View Compilation Error

0_0_21827314_1575.cpp:1:5: error: expected constructor, destructor, or type conversion before '(' token
 main(t,n,co,i){scanf("%d",&t);while(t--){scanf("%d",&n);--n;co=0;for(i=1;i*i<=n;++i)if(n%i==0){co+=2;if(i*i==n)--co;}printf("%d\n",co);}}
     ^