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Mar 11, 2023 · This article demonstrates the program to find the length of the string using pointers in C. Examples: Input : given_string = “geeksforgeeks”. Output : length of the string = 13. Input : given_string = “coding”. Output : length of the string = 6. Approach: In this program, we make use of the (*) dereference operator.
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- Frequently Asked Questions (FAQs) on Finding Length of String in C
There can be many different ways to find the length of the string. Some of the popular methods are listed below:
The idea is to initializes a variable lengthto zero. Then iterates through the string character by character, checking each character until it encounters the null terminator (‘\0’), which signifies the end of the string. For each character encountered, increments the length counter. Once the loop completes then returns the length which will give th...
We can find the length of the string using the strlen() function. It is defined inside the strlib.h library.
We can use pointer subtraction technique to find the length of string. When we subtract the address of the first character from the address of the null terminator, the result tells us how many characters are in between, which equals the string’s length. Each character occupies one byte, so the difference directly represents the number of characters...
Can we use the sizeof operator to find the size of a string?
Related Articles: 1. String in C 2. strlen in C
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Nov 25, 2012 · 60. Use strlen to find the length of (number of characters in) a string. const char *ptr = "stackoverflow"; size_t length = strlen (ptr); Another minor point, note that ptr is a string literal (a pointer to const memory which cannot be modified). Its better practice to declare it as const to show this.
Feb 15, 2023 · The function takes the string as an argument and returns the total number of characters it has: // C program to get the length of a string using pointers #include <stdio.h> // Function declaration int countChars (char * ); int main () { char str [100]; int length; printf ("Enter any string: "); gets (str); // Call the countChars () function ...
Sep 2, 2024 · Declare a String and a Pointer Variable: Declare a character array to store the string and a pointer to traverse the string. Input the String : Use gets or fgets to take input from the user. Calculate the Length Using the Pointer : Traverse the string using the pointer and count the number of characters until the null terminator ( '\0' ) is encountered.
Finding String Length using Pointers. To find the length of a string using pointers in C, we'll iterate through the characters of the string using a pointer until we encounter the null character ('\0'). Here's a step-by-step guide to finding string length using pointers: Declare String and Pointer: Define the string and take it as input and a ...
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Oct 11, 2024 · Step 1: First, declare the length of an array and array elements. Step 2: Declare the pointer variable and point it to the first element of an array. Step 3: Initialize the count_even and count_odd. Iterate the for loop and check the conditions for the number of odd elements and even elements in an array.
