Program to print First Digit of Number using For loop
- Write a program to print First Digit of Number using For loop in C
- Write a program to print First Digit of Number using For loop in C++
- Write a program to print First Digit of Number using For loop in Python
- Write a program to print First Digit of Number using For loop in PHP
- Write a program to print First Digit of Number using For loop in Java
- Write a program to print First Digit of Number using For loop in Java Script
- Write a program to print First Digit of Number using For loop in C#
Explanation:
By continually dividing a number by 10 until only one digit is left, a for loop may be used to locate and print the number’s initial digit.
Logic
- Take input for the number (n).
- Handle cases where n is negative by taking its absolute value.
- Use a for loop to repeatedly divide n by 10.
- Stop the loop when n becomes less than 10.
- The remaining value of n is the first digit
Program to print First Digit of Number using For loop
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C
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C++
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Python
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PHP
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JAVA
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Java Script
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C#
#include <stdio.h>
int main() {
int num;
printf("Enter a number: ");
scanf("%d", &num);
// Loop to divide the number by 10 until it is a single digit
for (; num >= 10; num /= 10);
printf("First digit: %d\n", num);
return 0;
}
#include <iostream>
using namespace std;
int main() {
int num;
cout << "Enter a number: ";
cin >> num;
// Loop to divide the number by 10 until it is a single digit
for (; num >= 10; num /= 10);
cout << "First digit: " << num << endl;
return 0;
}
num = int(input("Enter a number: "))
# Loop to divide the number by 10 until it is a single digit
while num >= 10:
num //= 10
print("First digit:", num)
<?php
$num = (int)readline("Enter a number: ");
// Loop to divide the number by 10 until it is a single digit
while ($num >= 10) {
$num = (int)($num / 10);
}
echo "First digit: $num\n";
?>
import java.util.Scanner;
public class FirstDigit {
public static void main(String[] args) {
Scanner scanner = new Scanner(System.in);
System.out.print("Enter a number: ");
int num = scanner.nextInt();
// Loop to divide the number by 10 until it is a single digit
while (num >= 10) {
num /= 10;
}
System.out.println("First digit: " + num);
scanner.close();
}
}
let num = parseInt(prompt("Enter a number:"));
// Loop to divide the number by 10 until it is a single digit
while (num >= 10) {
num = Math.floor(num / 10);
}
console.log("First digit:", num);
using System;
class Program {
static void Main() {
Console.Write("Enter a number: ");
int num = int.Parse(Console.ReadLine());
// Loop to divide the number by 10 until it is a single digit
while (num >= 10) {
num /= 10;
}
Console.WriteLine($"First digit: {num}");
}
}