C Program to Print Characters in a String

Write a C Program to Print Characters in a String using For loop, and while with a practical example.

C Program to Print Characters in a String Example 1

This program allows the user to enter a string (or character array). Next, we used While Loop to iterate each character inside a string. Inside this, we used the printf statement to print characters in this string.

/* C Program to Print Characters in a String */
#include <stdio.h>
int main()
{
    char str[100];
    int i = 0;
        
    printf("\n Please Enter any String  :  ");
    scanf("%s", str);
        
    while (str[i] != '\0')
    {
        printf("The Character at %d Index Position = %c \n", i, str[i]);
        i++;
    }
    return 0;
}

str[] = hello

While Loop First Iteration: while(str[i] != ‘\0’)

The condition is True because str[0] = h. So, the C Programming compiler will execute the printf statement.

Second Iteration: while(str[1] != ‘\0’)

The condition while(e != ‘\0’) is True. So, e will print

Do the same for the remaining While Loop iterations.

C Program to display Characters in a String Example 2

This string Characters program is same as above. Here, we just replaced the while loop with For Loop.

/* C Program to Print Characters in a String */
#include <stdio.h>
int main()
{
    char str[100];
        
    printf("\n Please Enter any String  :  ");
    scanf("%s", str);
        
    for(int i = 0; str[i] != '\0'; i++)
    {
        printf("The Character at %d Index Position = %c \n", i, str[i]);
    }
    return 0;
}

 Please Enter any String  :  python
The Character at 0 Index Position = p 
The Character at 1 Index Position = y 
The Character at 2 Index Position = t 
The Character at 3 Index Position = h 
The Character at 4 Index Position = o 
The Character at 5 Index Position = n