input integers from standard input and use in a function

This is a discussion on input integers from standard input and use in a function within the C Programming forums, part of the General Programming Boards category; i'm trying to input a set of integers from the keyboard, and then put them into an array and use ...

  1. #1
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    input integers from standard input and use in a function

    i'm trying to input a set of integers from the keyboard, and then put them into an array and use in a function; the integers can be any amount, say a maximum of 100. the problem is that, i'm not getting the input right and i don't know why. the code is like this:
    Code:
    int main(int argc, char *argv[])
    {
            int array[100];
            int k, n;
            scanf(" %d",&array);    
            int i;
            for (i=1; i<argc; i++){
             
                    if (array[i]=='\n')
                    {array[i] == '\0';
                    break;}
            printf("values: %d", array[i]);
            }
            n = sizeof(array);
       
            printf("%d\n", max(array, n));
            return 0;
    someone pls help me. i'm in urgent need

  2. #2
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    so i was able to get it to work for input from the keyboard, i still need to be able to redirect the input from a text file or smt and also for multiple sequences. the code so far is:
    Code:
    int main(int argc, char *argv[])
     {
            int alength, *a, k;
            alength = argc -1;
            a = (int *) calloc(alength, sizeof(int));
            for (k=1; k<argc; k++)
            {
            a[k-1] = atoi(argv[k]);
            }
    
    
         answer = max(a, alength);
    }

  3. #3
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    scanf()'s %d format reads a single int. If you want to read an array of ints, use a loop that calls scanf() repetitively.
    Right 98% of the time, and don't care about the other 3%.

  4. #4
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    the problem i still have is this

    the first gives a segmentation fault

    while the second can only read from the keyboard.

    so how do i modify either one to read from both the keyboard and a redirected file

  5. #5
    ATH0 quzah's Avatar
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    Post your failing code. If you are trying to scan into the particular element of an array, then you need to specify that spot:
    Code:
    scanf( "%d", &array[ x ] );

    Quzah.
    Hope is the first step on the road to disappointment.

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