convert a char element from an array to an int

Question

Hi I'm trying to convert elements of an array into integers using input from the user.

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

int main()
{
    char i[9]={'-','-','-','-','-','-','-','-','\0'};
    int j;
    printf ("enter an integer for an element ");
    sscanf(i, "%d", &j);

    return 0;
}

I read somewhere that using sscanf is one way to do it but I don't know the correct way to use it.

Answer 1

scanf reads from the standard input.

sscanf reads from a string.

Example of scanf usage:

#include <stdio.h>

int main()
{
   char str1[20];

   printf("Enter name: ");
   scanf("%s", str1);

   printf("First char converted to int: %d\n", str1[0]);

   int j = str1[1];
   printf("Second char converted to int: %d\n", j);

   return(0);
}

Input and Output:

Enter name: marcel
First char converted to int: 109
Second char converted to int: 97

Answer 2

As Marcel said, there are two different functions that do different things. You request convert elements of an array into integers using input from the user , so I can think you want this:

char i[9]={'-','-','-','-','-','-','-','-','\0'};
int j;
printf ("enter an integer for an element ");
scanf("%i", &j);
printf("Element[ %i ] in integer is: %i", j, i[j]);