C Program to Sort an array of names or strings
Given an array of strings in which all characters are of the same case, write a C function to sort them alphabetically.
The idea is to use qsort() in C and write a comparison function that uses strcmp() to compare two strings.
#include <stdio.h>#include <stdlib.h>#include <string.h> // Defining comparator function as per the requirementstatic int myCompare(const void* a, const void* b){ // setting up rules for comparison return strcmp(*(const char**)a, *(const char**)b);} // Function to sort the arrayvoid sort(const char* arr[], int n){ // calling qsort function to sort the array // with the help of Comparator qsort(arr, n, sizeof(const char*), myCompare);} int main(){ // Get the array of names to be sorted const char* arr[] = { "geeksforgeeks", "geeksquiz", "clanguage" }; int n = sizeof(arr) / sizeof(arr[0]); int i; // Print the given names printf("Given array is\n"); for (i = 0; i < n; i++) printf("%d: %s \n", i, arr[i]); // Sort the given names sort(arr, n); // Print the sorted names printf("\nSorted array is\n"); for (i = 0; i < n; i++) printf("%d: %s \n", i, arr[i]); return 0;} |
Given array is 0: geeksforgeeks 1: geeksquiz 2: clanguage Sorted array is 0: clanguage 1: geeksforgeeks 2: geeksquiz
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