C++ Program to capitalize first letter of each word

By | 26.12.2016

Capitalize first letter of each word


Write a C++ Program to capitalize first letter of each word. Here’s simple C++ Program to capitalize first letter of each word in C++ Programming Language.


C++ Strings : 


String is a sequence of characters. char data type is used to represent one single character in C++. So if you want to use a string in your program then you can use an array of characters.

The declaration and definition of the string using an array of chars is similar to declaration and definition of an array of any other data type.

Any string ends with a terminating null character ‘\0’. An array definition in such a way should include null character ‘\0’ as the last element.

C++ provides following two types of string representations:

  • The C-style character string.
  • The string class type introduced with Standard C++.

The C-style character string originated within the C language and continues to be supported within C++. This string is actually a one-dimensional array of characters which is terminated by a null character ‘\0’. Thus a null-terminated string contains the characters that comprise the string followed by a null.


Here is source code of the C++ Program to capitalize first letter of each word. The C++ program is successfully compiled and run(on Codeblocks) on a Windows system. The program output is also shown in below.


SOURCE CODE : :


/*  C++ Program to capitalize first letter of each word  */

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

int main()
{

    int i;
    char a[30];
    cout<<"\nEnter any string :: ";
    gets(a);

    int len = strlen(a);

    for(i=0;i<len;++i)
    {
        if(i==0)
        {
            if(islower(a[i]))
            a[i]=toupper(a[i]);
        }
        else
        {
            if(a[i]!=' ')
            {
                if(isupper(a[i]))
                    a[i]=tolower(a[i]);
            }
            else
            {
                i++;
                if(islower(a[i]))
                    a[i]=toupper(a[i]);
            }
        }
    }
    cout<<"\nUpdated New String is :: "<<a<<"\n";

    return 0;
}

OUTPUT : :


/*  C++ Program to capitalize first letter of each word  */

Enter any string :: CODEZCLUB IS A PROGRAMMING WEBSITE

Updated New String is :: Codezclub Is A Programming Website

Process returned 0

Above is the source code for C++ Program to capitalize first letter of each word which is successfully compiled and run on Windows System.The Output of the program is shown above .

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About Tunde A

My name is Tunde Ajetomobi, a Tech Enthusiast and Growth Hacker. I enjoy creating helpful content that solves problem across different topics. Codezclub is my way of helping young aspiring programmers and students to hone their skills and find solutions on fundamental programming languages.

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Deepak

Can you please tell me why there is using i++ below as we already used increment of i previously in for loop ?

codezclub  Post author

As u ask for why we use i++ inside else program since we are already increment i, The answer is……..

nix

error because of gets(a) ???

danial

#include <iostream>

using namespace std;
void cap(char *str);
int main()
{
  char str[50];
  gets(str);
  cap(str);
  cout<<str;
  return 0;
}
void cap(char* str)
{
  if( *str!=’ ‘)
    *str-=32;
  for(; *str; str++)
  {
    if( *str==’ ‘)
      *(str+1)-=32;
  }
}

Last edited 2 years ago by danial