Looking for help in my programing

[Sietor]

Hi! Recently started to teach my self learning C.
Right now i am trying to do a test.

In this test I am supposed to make a Password checking program,
this program is going to check if there is 1 Uppercase character, 1 number and 1 $ sign in the password.

This is what i got so far:

    char Password[5];


    printf("Enter Password: ");
    scanf("%s" , Password);
    if( isupper(Password[0])|| isupper(Password[1])||isupper(Password[2])||isupper(Password[4])
       || isupper(Password[3])|| isupper(Password[4]) ){

    }

I was wondering if there is some loop form I can use to skip writing isupper(Password[]) like a 1000 times.

Remeber I cant use void thats against the rules.

[GReaper]

Have you been taught loops and string manipulation?

The best approach here would be a for loop. Some boolean variables to indicate you've found at least one uppercase, number and $ should also be used.

In another note, you should always limit the number of characters scanf reads. You wouldn't want the user to give more than your array can hold.

[Sietor]

Yes I have been taught for loops while loops and do loops, also string manipulation.
Correct if wrong.

When I put out:

char Password[5]

I limit the array to 5 characters?

I just dont know how to make the loop read the characters in the password

[GReaper]

Your array is 5 characters wide, but scanf doesn't know that. You need to tell it, like this:

scanf("%4s", Password);

the reason for "4" instead of "5" is that the string needs a terminating null character.

On how to implement the checking, think of it like this. Every character could be uppercase, number, $ or something else. If you encounter any of the types you want while iterating through the string, you should make the program remember that it has. Preferably by using a boolean variable( 0 for false and 1 for true ).

[Sietor]

Thanks! Really helped!