Hi, I’m getting a runtime error for the code I wrote for lucky count problem in C
can anyone help me with the error(s)?
#include<stdio.h>
long int f(long int d,long int n)
{
long int x=0;
while(n)
{
if(n%10 == d)
x++;
n=n/10;
}
return x;
}
long int main(void)
{
long int n,t;
scanf("%d",t)
while(t!=0)
{
long int count =0;
long int i, r, l, s1,s2;
scanf("%d",n);
for(r=1;r<=n;r++)
{
for(l=1;l<=r;l++)
{
s1=0;
s2=0;
for(i=0;i<=r-l;i++)
{ s1+=f(4,l+i);
s2+=f(7,l+i);
}
if(s1==s2)
count++;
}
}
printf("%d",count);
t--;
}
return 0;
}