i need help making a password program. it lets the use input a password and check it if it is following the password rules, which are the following:
must have exactly 7 characters, only alphabets and digits are allowed.
i don't exactly know how to put that in an if else function, but i know i have to use that.
i also don't know if the string.h library is needed but, in our book, the question was from a chapter with strings.
use "strlen" and check character ranges. look at your ascii table.
post some code if you want any more advice.
i guess i can use that to check the length, and use the if else to see if the length is exactly 7.
and since the password is supposed to be 7 would i need to make the array size 8 for the \0 part of the string?
since u told me to post a code im gonna try but i know its wrong.
#include <stdio.h>
#include <string.h>
int main (void)
{
int length;
char pass[8];
printf("Enter a password with 8 characters.");
printf("It must have at least 1 digit and 1 alphabet.");
fgets( pass, 8, stdin);that's what i have for now, im trying to add the if function with strlen in it
Use the length() function and return a boolean
string str ("pasword");
if str.length() < 7 {
return 0;
}
else{
return 1:
}
that doesnt help him if his password is supposed to be EXACTLY seven characters, now does it?
and this is C, not C++
After reading in the password call functions to test each individual rule. Don't try to test all things in one function, or ghod forbid right after the read.
#include<stdio.h>
#include<string.h>
int main()
{
char un[7],pwd[10];
int i,f;
printf("\nEnter user name and pwd");
scanf("%s%s",un,pwd);
if(strlen(un)==7)
{
for(i=0;i<strlen(pwd);i++)
{
if(!isalnum(pwd[i]))
f=1;
}
}
if(f==1)
printf("pwd error");
else
-------proceed---------------
}I think the question is incomplete and need more details...........
SNIP
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