Description

To replace all spaces with dots, loop through string, when spaces
encountered replace with dots.

C/C++

/* C program to Replace Spaces With Dots */
//Save it as ReplaceSpaceWithDot.c

#include<stdio.h>
#include<string.h>
int main(){

    char str[100];
    int i;

    printf("Enter the string : ");
    gets(str);

    for(i=0;i<strlen(str);i++) {
        if(str[i] == ' ') {
            str[i] = '-';
        }
    }

    printf(str);

    return 0;
}

Input:
Enter the string : 
I love You and your family

Output:
String after replacing spaces with dots : 
I-love-You-and-your-family

Java

/* Java program to Replace Spaces With Dots */
//Save it as ReplaceSpaceWithDot.java

import java.io.*;
import java.util.Scanner;

public class ReplaceSpaceWithDot {

    public static void main(String[] args) {

        Scanner scanner = new Scanner(System.in);
        
        System.out.println("Enter the string : ");
        String str = scanner.nextLine();
        
        char myStr[] = str.toCharArray();
        
        for(int i=0;i<myStr.length;i++) {
            if(myStr[i] == ' ') {
                myStr[i] = '-';
            }
        }
        
        
        /*Predefined method in java to replace all occurances*/
        //String myStr = str.replaceAll(" ", "-");
        
        
        System.out.println("String after replacing spaces with dots : ");
        System.out.println(myStr);
    }
}

Input:
Enter the string : 
I love You and your family

Output:
String after replacing spaces with dots : 
I-love-You-and-your-family

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