Why wrong answer?
#include <stdio.h>
void main()
{
int t, n, count;
scanf("%d", &t);
while(t--)
{
count=0;
scanf("\n%d",&n);
while(n>0){
if(n%10==4)
{
count++;
}
n=n/10;
}
printf("\n%d", count);
}
}