Output not satisfactory in C program due to scanf function -

i executing program. on running program, first asks " enter number of test cases" , after enter number of test cases . after entering number of test cases cursor again in state of asking input user. don't know after giving number of test cases input why asking input . grateful?

#include<stdio.h> #include<string.h> #include<stdlib.h>  int main() {     int i,n;    char * arr[n];    printf("enter number of test cases\n");    scanf("%d \n",&n);    printf("enter string\n");     for(i=0;i<n;i++)    {        arr[i]= (char *)malloc(100*sizeof(char));       scanf(" %s ",arr[i]);    }    for(i=0;i<n;i++)    {       printf("the enter string : %s \n",arr[i]);    }    for(i=0;i<n;i++)    {        free(arr[i]);    }    return 0; } 

thanks friends discussing question. got answer , real problem scanf function. got nice link read problem. hope it. http://c-faq.com/stdio/gets_flush2.html

the problem in scanf statement

scanf("%d \n",&n); 

please remove ' ' , '\n' , work

scanf("%d",&n); 

also,

char * arr[n]; 

does not work way want. better solution be.

char **arr = null; /* input n */ arr = malloc(n * sizeof(char *));