The first module of my program and it's not working properly

Question

I want to take a number input from the user. I want it to work as a user defined array of structure.

    #include <stdio.h>
    #include <string.h>
    #include<stdlib.h>
    
    
    int main(void)
    {
         struct Data
         {
             char Name[10];
             int Age;
             char Gender;
         
         };
            int i, n;
            struct Data D[n]; 
               
            printf(" \n enter the number of user : ");
            scanf("%d",&n);
    
            printf("enter the User details :");
    
            for(i=0;i<n;i++)
            scanf("%s" "%d" "%c",D[i].Name,&D[i].Age,&D[i].Gender);

    return 0;
            
     }

@OnkarChougule do `struct Data D[n];` after `scanf("%d",&n);` — JASLP doesn't support the IES, Jul 09 '21 at 13:37
`"%s" "%d" "%c"` ==> `"%s" "%d" " %c"` (note the added space). Is this a case of whitespace being left in the buffer? Similar to [scanf() leaves the newline char in the buffer](https://stackoverflow.com/questions/5240789/scanf-leaves-the-new-line-char-in-the-buffer). — Weather Vane, Jul 09 '21 at 13:38
Thanks it worked justAsimplelonelyProgrammer and weather Vane — Onkar Chougule, Jul 09 '21 at 13:41
Although correct, your format would be simpler as `"%s %d %c"` — stark, Jul 09 '21 at 13:42

score 1 · Answer 1 · answered Jul 10 '21 at 16:28

Try using this instead , if you want to declare an array with unknown number of parts , you must read the n value from the user first , and then procced in your programm , quick note : " The struct declaration is an alternatif you can use but the one you used is also correct " , hope I helped you ;)

#include <stdio.h>
#include <string.h>
#include <stdlib.h>


typedef struct
     {
         char Name[10];
         int Age;
         char Gender;

     }Data;


int main()
{

        int i, n;


        printf(" \n enter the number of users : ");
        scanf("%d",&n);

        Data D[n];

        printf("enter the users details ....\n\n");

        for(i=0;i<n;i++){
        printf("Enter the user number %d informations : \n",i+1);
        scanf("%s %d %c",D[i].Name,&D[i].Age,&D[i].Gender);
        }

return 0;

 }

The first module of my program and it's not working properly

1 Answers1