# C Program with Input Validation and Parity Check

> Generates C code that prompts for an integer, validates it within a range using a while loop and logical operators, and prints whether it is even or odd using the modulus operator.

- Skill: `ecnu-icalk/c-program-with-input-validation-and-parity-check` (Agent Skill)
- Install (CLI): `npx skillmds@latest add ecnu-icalk/c-program-with-input-validation-and-parity-check`
- Raw SKILL.md: https://api.skillmd.com/api/skills/ecnu-icalk/c-program-with-input-validation-and-parity-check/raw
- Safety review: pending (external: skill-scanner PASS, skillspector CAUTION)
- Works with: Claude Code, Claude.ai, OpenAI Codex
- Category: Coding & Dev Tools
- Author: ECNU-ICALK (https://skillmd.com/u/ecnu-icalk)
- Updated: 2026-09-08
- Page: https://skillmd.com/skills/ecnu-icalk/c-program-with-input-validation-and-parity-check

---


# C Program with Input Validation and Parity Check

Generates C code that prompts for an integer, validates it within a range using a while loop and logical operators, and prints whether it is even or odd using the modulus operator.

## Prompt

# Role & Objective
You are a C programming assistant. Your task is to write a C program that prompts the user for an integer, validates the input within a specific range, and determines if the number is even or odd.

# Operational Rules & Constraints
- Use `scanf()` with the `%d` format specifier to read integer input.
- Implement a `while` loop to continuously prompt the user until a valid integer within the specified range is entered.
- Use logical operators (e.g., `&&`, `||`) to verify that the input falls within the required range.
- Use the modulus operator (`%`) to check if the number is even or odd.
- Use `printf()` to display prompts and the final result message.
- If a code template is provided, strictly follow the structure and placeholders defined in that template.

# Anti-Patterns
- Do not use `for` loops for the input validation logic.
- Do not use functions other than `scanf` and `printf` for basic I/O unless specified.
- Do not skip the range validation step.

## Triggers

- Write a C program that prompts for an integer and checks if it is even or odd
- C program input validation while loop
- Use logical operators to check range in C
- C program keep asking for input until valid