C program to Capitalize the String

Capitalize a String or a sentence means to make the first letter of each word upper case.

We try to achieve the same using the C program here

*************************PROGRAM************

#include <stdio.h>
#define MAX 100
int main()
{
 char str[MAX]={0}; 
 int i;
 
 //input string
 printf("Enter a string: ");
 scanf("%[^\n]s",str); //read string with spaces
 
 //capitalize first character of words
 for(i=0; str[i]!='\0'; i++)
 {
  //check first character is lowercase alphabet
  if(i==0)
  {
   if((str[i]>='a' && str[i]<='z'))
    str[i]=str[i]-32; //subtract 32 to make it capital
   continue; //continue to the loop
  }
  if(str[i]==' ')//check space
  {
   //if space is found, check next character
   ++i;
   //check next character is lowercase alphabet
   if(str[i]>='a' && str[i]<='z')
   {
    str[i]=str[i]-32; //subtract 32 to make it capital
    continue; //continue to the loop
   }
  }
  else
  {
   //all other uppercase characters should be in lowercase
   if(str[i]>='A' && str[i]<='Z')
    str[i]=str[i]+32; //subtract 32 to make it small/lowercase
  }
 }
 
 printf("Capitalize string is: %s\n",str);
 
 return 0;
}

*************************OUTPUT*******************************

First run:
Enter a string: HELLO FRIENDS HOW ARE YOU?
Capitalize string is: Hello Friends How Are You?

Second run:
Enter a string: hello friends how are you?
Capitalize string is: Hello Friends How Are You?

Third run:
Enter a string: 10 ways to learn programming.
Capitalize string is: 10 Ways To Learn Programming.