C program to Count the total number of characters in the given string including space

In this article, we will discuss the concept of the C program to Count the total number of characters in the given string including space

In this post, we are going to learn how to count the total number of character including space of the given String in C programming language

Code to count the total number of characters in the given string

Code to count the total number of characters in the given string using for loop

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

Program 1

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

int main()
{
    char str[100];
    int i,totChar;
totChar=0;
    printf("Please enter the string for count characters\n");
    gets(str);
//count characters of a string wit out space

    for(i=0; str[i] != '\0'; i++){
        if(str[i]!='\0')
        {
            totChar++;
        }
    }
    printf("The total characters of the given string= %d",totChar);
    getch();
    return 0;
}

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

Please enter the string for count characters
C programming language
The total characters of the given string= 22

Approach

Declare a character array as char str[100];
Declare and initialize an integer variable as int i ,totChar=0;
The user asked to enter a string to count character
A for-loop is used to count total characters of the given string
It is initialized as i=0, and checks condition whether str[i] != ‘\0’; and then executes the loop until the given condition becomes true
Use an if condition to test if(str.charAt(i)!=’ \0′), if it is true, totChar becomes totChar + 1(totChar =totChar + 1)
Finally, the program displays the total number of the character using the totChar variable

Code to count the total number of characters in the given string using while loop

The program allows the user to enter a String and then it counts and display the number of characters including space of the given string using while loop in C programing language

Program 2

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

int main()
{
    char str[100];
    int i,totChar;
totChar=0;
    printf("Please enter the string for count characters\n");
    gets(str);
//count characters of a string wit out space
i=0;
    while(str[i] != '\0'){
        if(str[i]!='\0')
        {
            totChar++;
        }
         i++;
    }
    printf("The total characters of the given string= %d",totChar);
    getch();
    return 0;
}

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

Please enter the string for count characters
C language
The total characters of the given string= 10

Approach

Declare a character array as char str[100];
Declare and initialize an integer variable as int i ,totChar=0;
The user asked to enter a string to count character
A while-loop is used to count total characters of the given string
It is initialized as i=0, and checks condition whether str[i] != ‘\0’; and then executes the loop until the given condition becomes true
Use an if condition to test if(str.charAt(i)!=’ \0′), if it is true, totChar becomes totChar + 1(totChar =totChar + 1)
Finally, the program displays the total number of the character using the totChar variable

Code to count the total number of characters in the given string using do-while loop

Program 3

The program allows the user to enter a String and then it counts and display the number of characters including space of the given string using do-while loop in C programing language

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

int main()
{
    char str[100];
    int i,totChar;
totChar=0;
    printf("Please enter the string for count characters\n");
    gets(str);
//count characters of a string wit out space
i=0;
    do{
        if(str[i]!='\0')
        {
            totChar++;
        }
         i++;
    }while(str[i] != '\0');
    printf("The total characters of the given string= %d",totChar);
    getch();
    return 0;
}

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

Please enter the string for count characters
C does not support oop concept
The total characters of the given string= 30

Approach

Declare a character array as char str[100];
Declare and initialize an integer variable as int i ,totChar=0;
The user asked to enter a string to count character
A do-while loop is used to count total characters of the given string.
It is initialized as i=0, and checks condition whether str[i] != ‘\0’; and then executes the loop until the given condition becomes true
Use an if condition to test if(str.charAt(i)!=’ \0′), if it is true, totChar becomes totChar + 1(totChar =totChar + 1)
Finally, the program displays the total number of the character using the totChar variable