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FR-AI / ANALYSISWhy it is worth attention
It is a clear, minimal example of implementing password strength evaluation in C, useful for learning string handling and basic security concepts.
Who it is for
- C programming beginners
- Computer science students learning string functions
- Educators teaching introductory CLI tools
- Security enthusiasts exploring simple password policies
Use cases
- Learning how to use ctype.h functions for character classification
- Building a foundation for more advanced password checkers
- Quickly evaluating password strength from the command line
- Demonstrating basic if-else logic and boolean flags in C
Strengths
- Simple and understandable code structure
- Clear output classification (Strong/Medium/Weak)
- Easy to compile and run with GCC on any system
- Covers fundamental password criteria (length, character types)
Considerations
- No configurable minimum length – uses an arbitrary threshold (not specified in README)
- Does not check against common passwords or dictionary attacks
- No entropy or rate-limiting considerations
README quick start
Password Strength Checker (C)
A simple command-line Password Strength Checker written in C.
Features
- Checks minimum password length
- Detects uppercase letters
- Detects lowercase letters
- Detects digits
- Detects special characters
- Classifies password as:
- Strong
- Medium
- Weak
Technologies Used
- C Programming
- Standard Library
- String Handling
- Character Functions
Compile
gcc password_checker.c -o checker
Run
./checker
Sample Password
Hello@123
Result
STRONG PASSWORD
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