dynamic memory allocation with strings and fixed sized

Question

I'm trying to allocate memory for strings, but no matter what I do, I always allocate memory for seven characters, even changing the size. can someone help please?

#include <stdio_ext.h>
#include <stdlib.h>
    
int main() 
{
    char *s;
    int n;  

    printf("string size? ");
    scanf("%d",&n);
    
    __fpurge(stdin); 

    
    s = (char *)malloc((n+1) * sizeof(char));
    if (!s)
    {
        printf("not possible\n");
        exit(0);
    }

    printf("Enter the string: ");
    fgets(s, sizeof(s), stdin);

    printf("String: %s\n",s);

    free(s);
}

Answer 1

sizeof(s) returns size of pointer which is 8 in your case, you should rewrite this fgets(s, sizeof(s), stdin); with this fgets(s, n + 1, stdin);.