why does the first loop print 01 and then executes gets() function ?

#include<stdio.h>
#include<string.h>
int main()
{
    int entry,i,option;
    printf("\nPlease indicate the number of records you want to enter :\n");
    scanf("%d",&entry);
    char ent[entry][100],name[entry][20],surname[entry][20],score[entry][10];
    printf("\nPlease input records of students (enter a new line after each record), with following format first name last name score \n");

    for(i=0;i<entry-1;i++)
    {
        printf("%d",i);
        gets(ent[i]);
        printf("%s",ent[i]);
    }

    for(i=0;i<entry-1;i++)
    {
        strncpy(name[i],strtok(ent[i]," "),sizeof(name[i]));
        printf("\n%s\n",name[i]);
    }

    printf("\nPlease choose the appropriate options :");
    printf("\nPrint records (press 1)\nSearch by first name (press 2)\nSearch by last name (press 3)\nSort by score (press 4)\nSort by last name (press 5)\nExit the program (press 0)\n");
    scanf("%d",&option);
    return 0;
}