how i can check if in scanf i got an integer and not a char

[drifting parrot]

 displayPuzzle(gr, st, pinakas, numbers, op, snum, pdis, test);
    test = 1;
    int check = 1;
    do
    {
        do
        {
            printf("\nEnter your command in the following format:\n");
            printf("i,j=val: for entering val at position (i,j)\n");
            printf("0,0=0 : for saving and ending the game\n");
            printf("Notice: i,j,val numbering is from [1..%d]\n", pdis);

            if (scanf("%d%c%d%c%d", &i, &kom, &j, &ison, &val) != check)
            {
                printf("Wrong format try again2\n");
                check = 0;
                break;
                
            }
            else if (kom != ',' || ison != '=' || i > pdis || i < 0 || j > pdis || j < 0 || val > pdis || val < 0)
                {
                    printf("Wrong format try again1\n");
                }

        } while (kom != ',' || ison != '=' || i > pdis || i < 0 || j > pdis || j < 0 || val > pdis || val < 0);
        if (check != false)
        {
            numbers[i - 1][j - 1] = val;
            printf("Value inserted!\n");
        }
        printf("***This is not a valid Kenken puzzle***\n");
        displayPuzzle(gr, st, pinakas, numbers, op, snum, pdis, test);

    } while (i != 0 && j != 0 && val != 0);

if my input is aaaaa it becomes an infinity loop

[native flax]

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[sinful adder]

I would not suggest using scanf
https://sekrit.de/webdocs/c/beginners-guide-away-from-scanf.html

[drifting parrot]

this is what is happening

@sinful adder

[drifting parrot]

i did it like this

 scanf("%s", input);
            i=atoi(input);
            input[0]=input[2];
            kom=input[1];
            j=atoi(input);
           input[0]=input[4];
            ison=input[3];
            val=atoi(input);

!solved

[native flax]

Thank you and let us know if you have any more questions!

[SOLVED] how i can check if in scanf i got an integer and not a char