C++ code: Count Number of space of the given string

In this article, we will discuss the concept of the C++ code: Count Number of spaces of the given string

In this post, we are going to learn how to count the number of spaces in the given string in C++ programming language

C++ code: Count Number of space of the given string — Count Number of space of the given string

Code to count the white spaces in the given string

count the white space in the given string using for loop

The program allows the user to enter a String and then it counts the number of white space in the given string using for loop in C++ programing language

Program 1

#include <iostream>
#include <conio.h>
#include <stdio.h>
using namespace std;

int main()
{
char str[100];
int i;
int space=0;
    cout<<"Enter a string\n";

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

cout<<"Total white space :"<<space;
getch();
    return 0;
}

When the above code is executed, it produces the following result

Enter a string
C++ is an OOP supported language
Total white space: 5

Count the white space of the given string using while loop

The program allows the user to enter a String and then it counts the white space in the given string using while loop in C++ programing language

Program 2

#include <iostream>
#include <conio.h>
#include <stdio.h>
using namespace std;

int main()
{
char str[100];
int i;
int space=0;
    cout<<"Enter a string\n";

    gets(str);
         i=0;
    while(i<=str[i]){
 if(str[i]==' '){
        space++;
 }
    i++;
}

cout<<"Total white space :"<<space;
getch();
    return 0;
}

When the above code is executed, it produces the following result

Enter a string
C and C++ are procedural languages
Total white space: 5

Count Number of space of the given string using do-while loop

The program allows the user to enter a String and then it counts the white spaces in the given string using do-while loop in C++ programing language

Program 3

#include <iostream>
#include <conio.h>
#include <stdio.h>
using namespace std;

int main()
{
char str[100];
int i;
int space=0;
    cout<<"Enter a string\n";

    gets(str);
         i=0;
  do{
 if(str[i]==' '){
        space++;
 }
    i++;
}  while(i<=str[i]);

cout<<"Total white space :"<<space;
getch();
    return 0;
}

When the above code is executed, it produces the following result

Enter a string
This is a string
Total white space: 3

Approaches

Declare a Caracter array as char ch[100];
Declare and initialize integer variables as space=0;
The user asked to enter a string
The given string is stored in the variable str;
A loop(for, while and do-while) is used to count space in the given string.
It is initialized as i=0, checks the condition whether i<=str[i]; and executes the loop until the given condition becomes true
Use an if condition to test if(str[i]==’ ‘), when the if statements is true, The space becomes space + 1( space = space +1);
When it is false, terminates the loop
Finally, the program displays the total number of space of the given string