Skip to main content

Featured

Solve LeetCode 3 Longest Substring Without Repeating Characters in C++ using the sliding window

Longest Substring Without Repeating Characters in C++ LeetCode 3 · sliding window · last index array Table of Contents Problem Statement Approach Algorithm C++ Program Input Sample Output Output Explanation Dry Run Flow of Execution Time Complexity Space Complexity Applications Key Points Interview Questions Frequently Asked Questions Conclusion Problem Statement 3. Longest Substring Without Repeating Characters Given a string s , find the length of the longest substring that contains no repeating characters. A substring is a continuous part of the string, so "pwke" is a subsequence of "pwwkew" but not a substring. Approach We use a sliding window . The window is the part of the string between start and end , and we always keep it free of repeated characters. An array lastIndex of size 128 remembers the most recent position of every ASCII ...

C Program to Convert Hexadecimal to Decimal

C Program to Convert Hexadecimal to Decimal

✅ C Program to Convert Hexadecimal to Decimal

#include <stdio.h>
int main() {
    int num;
    printf("Enter a hexadecimal number: ");
    scanf("%x", &num);   // Read hex input

    printf("Decimal: %d\n", num);
    return 0;
}
  

๐Ÿ“˜ Explanation:

This program converts a hexadecimal number into its decimal form.

  • scanf("%x", &num) → reads a number in hexadecimal format and stores it in an integer.
  • printf("%d", num) → prints the decimal equivalent of the number.
  • No manual calculation is required since C handles the conversion automatically.

๐Ÿงพ Sample Output:

Enter a hexadecimal number: 1A
Decimal: 26

Enter a hexadecimal number: FF
Decimal: 255
  

๐Ÿ”‘ Keywords:

C program hex to decimal, hexadecimal to decimal conversion, scanf %x example, C programming basics, interview C programs

๐Ÿ“Œ Hashtags:

#CProgramming #HexToDecimal #CodingForBeginners #InterviewQuestions #LearnC

๐Ÿ” Search Description:

This C program converts a hexadecimal number to decimal using scanf with %x format specifier. Simple explanation with output examples.

Comments

Popular Posts

๐ŸŒ™