Chapter - 10: Strings

Write a program to sort a set of names stored in an array in alphabetical order.


F
Sections
2
Exercises
#include<stdio.h>
#include<conio.h>
#include<string.h>
#include<malloc.h>
#include<Windows.h>

void swap(char *a, char *b)
{
	char temp[20];
	strcpy(temp, a);
	strcpy(a, b);
	strcpy(b, temp);
}
void sort_names(char** name_list, int tot_names)
{
	int i, j, k = 0;
	for (i = 0; i < tot_names; i++)
	{
		for (j = i + 1; j < tot_names; j++)
		{
			k = 0;
			while (name_list[i][k] == name_list[j][k])
				k++;
			if (name_list[i][k] > name_list[j][k])
				swap(name_list[j], name_list[i]);
		}
	}
}
int main()
{
	char *nam_list[10], *p, name[20], ans = 'y';
	int i = 0, j = 0, a, b;
	while (ans == 'y')
	{
		printf("\nEnter the name : ");
		scanf("%s", name);
		p = (char*)malloc(strlen(name));
		strcpy(p, name);
		nam_list[i] = p;
		i++;
		while (getchar() != '\n');
		printf("\nWant to enter another name (y/n) : ");
		scanf("%c", &ans);
	}
	puts("\n");
	sort_names(nam_list, i);
	system("cls");
	puts("\n\t\t\tNames in sorted order are follows.\n\n");
	for (j = 0; j <= i - 1; j++)
		puts(nam_list[j]);
	_getch();
	return 0;
}

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