String length Error

I am reading the string from the stdin using fgets function and then trying to print the length of the string, But I am always getting the length of the string as 1 always for the first time Here is my code

#incldue<stdio.h>
#include<string.h>
int main(void)
{
   printf("\n Enter the no of test cases");
   scanf("%d",&t);
   int i,j;
   for(i=0;i<t;++i)
   {
     char song[500],val[28];
     int k=0,x=0;
     fgets(song,500,stdin);
     int len=strlen(song);
     printf("\nlen=%d",len);
   }
  return 0;
}

I am always getting 1 as the length for the first test case :/ Please suggest where i am going wrong