C Programming: Remove the spaces between two words of its content

Last update on August 06 2025 13:03:19 (UTC/GMT +8 hours)

29. Remove Spaces from File Content

Write a program in C to read a file and remove the spaces between two words of its content.

Sample Solution:

C Code:

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

int main() {
    FILE * pfile; // File pointer to handle file operations
    int a; // Variable to store characters read from the file

    printf("\n Remove the spaces between two words :\n");
    printf("-----------------------------------------\n");

    // Open a file named "file.txt" in read mode
    pfile = fopen("file.txt", "r");

    printf(" The content of the file is :\n The quick brown fox jumps over the lazy dog\n\n");

    printf(" After removing the spaces the content is : \n");

    // Check if file is opened successfully
    if (pfile) {
        // Read characters from file until End of File (EOF) is reached
        do {
            a = fgetc(pfile); // Read a character from the file

            // Check if the character is printable (not a space or control character)
            if (isgraph(a)) {
                putchar(a); // Print the character if it's not a space or control character
            }
        } while (a != EOF); // Repeat until End of File (EOF) is encountered

        fclose(pfile); // Close the file
    }

    printf("\n\n");
    return 0; // Return 0 to indicate successful execution of the program
}

Output:

 Remove the spaces between two words  :                                 
-----------------------------------------                               
 The content of the file is :                                           
 The quick brown fox jumps over the lazy dog                            
                                                                        
 After removing the spaces the content is :                             
Thequickbrownfoxjumpsoverthelazydog

Flowchart:

Flowchart: Remove the spaces between two words of its content

For more Practice: Solve these Related Problems:

Write a C program to read content from a file and remove all spaces between words before printing.
Write a C program to open a text file, strip out all whitespace characters, and display the continuous string.
Write a C program to process a file’s content, remove spaces, and then write the modified text to a new file.
Write a C program to read a file and merge all words into one long string by eliminating every space.

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C Programming Code Editor:

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