Demonstration of some of the string functions in ANSI Standard C

//---------------------------------------------------------------
// File: StringDemo.cpp
// Purpose: Demonstration of string functions available in through
//		the string.h header file in ANSI standard C.
// Programming Language: C
// Author: Dr. Rick Coleman
//---------------------------------------------------------------
#include <stdio.h>		// For printf() function
#include <string.h>

int main(int argc, char **argv)
{
	char line[64];	// Define a char array to demonstrate C functions


	printf("Demonstrating copying the string \"This is a test string.\"\n");
	printf("\tinto the character array line[64]\n\n");
	// Copy the string using strcpy
	strcpy(line, "This is a test string.");
	// Print the results
	printf("line: %s\n", line);
	// Also print the length of the string using strlen()
	printf("Length = %d\n\n", strlen(line));

	printf("\n\nPress [Enter] to continue.\n\n");
	getchar();

	printf("Demonstrating concatenating the string \"  It uses string functions.\"\n");
	printf("\tonto the character array line[64]\n\n");
	// Copy the string using strcpy
	strcat(line, "  It uses string functions.");
	// Print the results
	printf("line: %s\n", line);
	// Print the new length
	printf("Length = %d\n\n", strlen(line));

	printf("\n\nPress [Enter] to continue.\n\n");
	getchar();

	printf("Demonstrating strcmp()\n");
	printf("Copying \"MNOP\" into line\n");
	strcpy(line, "MNOP");
	printf("Comparing to the string \"ABCD\" results = %d\n", strcmp(line, "ABCD"));
	printf("Comparing to the string \"MNOP\" results = %d\n", strcmp(line, "MNOP"));
	printf("Comparing to the string \"WXYZ\" results = %d\n", strcmp(line, "WXYZ"));

	printf("\n\nPress [Enter] to continue.\n\n");
	getchar();

	printf("\n\nDemonstrating other string functions\n");
	printf("Copying the string \"How do I program thee. Let me iterate the ways.\"");
	printf(" into line.\n\n");
	strcpy(line, "How do I program thee. Let me iterate the ways.");

	printf("Results of call to strchr(line, 'I') = %s\n", strchr(line, 'I'));
	printf("Results of call to strrchr(line, 'L') = %s\n", strrchr(line, 'L'));
	printf("Results of call to strstr(line, \"the\") = %s\n", strstr(line, "the"));
	printf("Results of call to strstr(line, \"love\") = %s\n", strstr(line, "love"));

	return 0;
}