Input a password from the user and check if it has a char, alphabet and digit

Question

My doubt is that, the program works fine if I enter a password that fills the array. However if I enter a password such as \"apple25\", I think it counts the blank spaces in the

Answer 1

That's because your loop runs over the entire, not just upto the characters you read.

Instead do,

    size_t len = strlen(arr);

    for (i=0; i

You may also want to use fgets() to avoid buffer overrun. If you enter more than 10 characters, you'll overflow arr, which is undefined behaviour.

Instead of

scanf("%s",arr );

do

fgets(arr, sizeof arr, stdin);
char *p = strchr(arr, '\n');
if(p) *p = 0; //trim the trailing newline, if present