Remove All Whitespace in C

Welcome to the Remove All Whitespace in C page! Here, you'll find the source code for this program as well as a description of how the program works.

Current Solution

#include <stdio.h>
#include <string.h>
#include <ctype.h>

int main(int argc, char *argv[]) {
    // check whether the passed argument is a string or empty
    if (argc < 2 || argv[1][0] == '\0') {
        printf("Usage: please provide a string\n");
        return 1; 
    }

    char *input = argv[1]; 
    char output[1000];  
    int j = 0; 

    for (int i = 0; input[i] != '\0'; i++) {
        // check if current character is not a whitespace character
        if (!isspace(input[i])) {
            output[j++] = input[i];
        }
    }

    // null terminator to mark the end of a string
    output[j] = '\0';

    // print the output string with no spaces
    printf("%s\n", output);

    return 0;
}

Remove All Whitespace in C was written by:

• qopci

If you see anything you'd like to change or update, please consider contributing.

How to Implement the Solution

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How to Run the Solution

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