Remove Spaces in C, C++, Java & Python – Code with Explanation & Examples in Short and Simple

   

C Program

#include <stdio.h>
#include <string.h>
int main() {
    char str[100], result[100];
    int i, j=0;
    printf("Enter a string: ");
    fgets(str, sizeof(str), stdin);
    for(i=0; str[i]!='\0'; i++) {
        if(str[i] != ' ')
            result[j++] = str[i];
    }
    result[j] = '\0';
    printf("String without spaces: %s", result);
    return 0;
}

C Output

Input:
hello world program

Output:
helloworldprogram

C++ Program

#include <iostream>
#include <string>
using namespace std;
int main() {
    string str, result="";
    cout << "Enter a string: ";
    getline(cin, str);
    for(char c : str)
        if(c != ' ')
            result += c;
    cout << "String without spaces: " << result;
    return 0;
}

C++ Output

Input:
learn coding now

Output:
learncodingnow

JAVA Program

import java.util.Scanner;
public class Main {
    public static void main(String[] args) {
        Scanner sc = new Scanner(System.in);
        System.out.print("Enter a string: ");
        String str = sc.nextLine();
        String result = str.replace(" ", "");
        System.out.println("String without spaces: " + result);
    }
}

JAVA Output

Input:
java is powerful

Output:
javaispowerful

Python Program

text = input("Enter a string: ")
result = text.replace(" ", "")
print("String without spaces:", result)

Python Output

Input:
python is fun

Output:
pythonisfun

In-Depth Explanation

Example

If we take a string such as "hello world program", it contains spaces between words. If we remove spaces, then it becomes "helloworldprogram". This operation is quite straightforward, but it demonstrates the power of string manipulation in programming. It instructs us to scan through characters, remove unwanted ones, and build a new string.

Real-Life Analogy

Consider putting an address on an envelope. If you put it on with unneeded spaces such as "123 Main Street," the postal service might still be able to read it, but computers don't accept ambiguity. Taking out spaces is analogous to scrubbing the address to "123MainStreet." It's neater, processes quicker, and prevents confusion. In the same way in programming, spaces can be troublesome when you need specific data formats.

Why It Matters

Spaces tend to infiltrate user input or files. When you're working with names, email addresses, or identifiers, extraneous spaces can wreak havoc on a program. For instance, " [email protected]" (with the space at the beginning) will be processed as distinct from "[email protected]". That might lead to login issues or unsuccessful database matches. Eliminating spaces maintains consistency and accuracy in data processing. 

Learning Insights

This exercise educates students at a beginner level on traversal of strings, checking conditions, and producing new modified outputs. It introduces the significance of data preprocessing prior to information processing. It is a standard warm-up problem in interviews to check if a student has knowledge of loops, condition statements, and string operations. An added complexity would be to eliminate all whitespace characters (tabs, newlines) rather than merely spaces.

Use in Real Projects

In web development, space removal is necessary while working with URLs or database keys. In text processing, spaces can disrupt keyword extraction. In programming competitions, removal of space is convenient while processing formatted input. Even while preprocessing for artificial intelligence, spaces could be removed to normalize data before inputting it into models.

SEO-Optimized Closing Paragraph

Knowing how to strip spaces from a string in C, C++, Java, and Python is a core programming ability that needs to be practiced by every programmer. It not only enhances string handling and loop knowledge but also indicates how real-world applications sanitize and handle user input efficiently. Whether coding interview preparation, competitive programming problem solving, or building projects in which clean data is paramount, learning how to strip spaces properly guarantees program output stability. New programmers looking for simple string manipulation examples for multiple programming languages will find this problem particularly useful for establishing solid programming foundations.