Happy Codings - Programming Code Examples

C Programming Code Examples

C > Strings Code Examples

C String function - strncpy - copies first n characters of str2 into str1



C String function - strncpy - copies first n characters of str2 into str1

char *strncpy( char *str1, char *str2, size_t n)
size_t is unassigned short and n is a number.
Case1: If length of str2 > n then it just copies first n characters of str2 into str1.
Case2: If length of str2 < n then it copies all the characters of str2 into str1 and appends several terminator chars('\0') to accumulate the length of str1 to make it n.

#include <stdio.h>
#include <string.h>
int main()
{
     char first[30] = "Happy Codings";
     char second[30] = "C Programming Language Code Examples: I'm using strncpy now";
     /* this function has copied first 10 chars of s2 into s1*/
     strncpy(s1,s2, 12);
     printf("String s1 is: %s", s1);
     return 0;
}

C Codes Implement Recalibrate Command - Check whether the FDC is ready. Read status of main status register. Check whether FDC is ready. Input the command parameters. Enter command parameters. Check the status of...

Code print all unique elements in an array - C Program to read elements in an array and print all unique element present in array. C program to find unique/distinct elements in an array. Logic to print all unique elements...

Perform to a 2D FFT Inplace a Complex 2D - A fast Fourier transform (FFT) is an algorithm to computing the discrete 'Fourier transform' and its inverse. Fourier analysis converts time (or space) to frequency and vice versa; an FFT

C Language Code Investigating the Family - C Function to input data on Family members. C Function to output data on people on file. Structure to hold data from file. Pointer to Family structure. File position. Open file for

Check Vowel or Consonant use ASCII Code - English Alphabets a, e, i, o, u both Lowercase & Uppercase are known as vowels. Alphabets other than Vowels are known as Consonants. Step by step descriptive logic to check vowels

Access Elements of an Array Using Pointer - Program Declares the array of five element & the elements of that array are accessed using pointer. The five elements are entered by the user and stored in the integer array data. And

C++ Computes Discrete Fourier Transform - This is a C++ Program to perform Fast Fourier Transform. A 'Fast Fourier transform' (FFT) is an algorithm to compute the discrete Fourier transform (DFT) & its inverse. Fourier analysis

Largest Rectangular Area in a Histogram - Get minimum of two numbers in hist[]. Get the 'middle index' from corner indexes. Get the index of minimum value in a given range of indexes. Then returns 'index' of minimum