CODEWITHSUNDEEP
cloopsvariablesvariable-declaration
Pranshu_Taneja
Pranshu_Taneja

Reputation: 354

how can i make a loop in which each time new variable can be made on each processing of loop

So I was working on some question practice and there I came to a need to create a new variable on each processing of loop like (str_i) where (i) will be given as 1,2,3... I also made a code but I wasn't able to do this....

#include <stdio.h>
#include <string.h>
#include <math.h>
int main()
    {
        int i,M,N;
        char a[20];
        printf("enter the n. of string you want to be processed=");
        scanf("%d",&N);


        char str;
        for (i=1;i<=N;i++)
            {
                scanf("%s",a);
                printf("%s \n",a);
                /*Now here i want to create a new variable for 
                each iteration like str_1,str_2..... and so on*/

            }


    }

Upvotes: 1

Views: 590

Answers (1)

fcdt
fcdt

Reputation: 2493

That's called an array: Since you already know the number of loop runs in advance, you can create an array with a fixed size in advance and then fill it in the loop:

char **str = malloc(sizeof(*str) * N);

if you want to read in strings, you have to reserve additional storage space in each iteration

str[i] = malloc(strlen(a) + 1);

and copy the content from your buffer a into:

strcpy(str[i], a);

Since your buffer is only 20 bytes long, you should also limit the input to 19 characters (1 byte is required for the final zero character):

scanf("%19s", a);

Otherwise this could lead to a buffer overflow.

Upvotes: 2

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