Uge 6.3 opgave

Sourcecode

/*
 ============================================================================
 Name        : 3.c
 Author      : 
 Version     :
 Copyright   : Your copyright notice
 Description : Hello World in C, Ansi-style
 ============================================================================
 */
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#define SIZE 50

int main ()	// Main start
{
	setvbuf(stdout, NULL,_IONBF, 0); // Force flush
	setvbuf(stdout, NULL, _IOLBF, 0); // Another force flush

	int a = '0'; 			// Opretter forskellige datatyper
	double b = '2';
	float c = '0';

	puts("Indtast 3 talv�rdier");
	scanf("%d%lf%f", &a, &b, &c);			// Tager input fra brugeren og gemmer
											// det i de givne datatyper

	char s[] = "Vores tekst string";

	printf("int a: %d \ndouble b: %lf \nfloat c: %f \n", a, b, c); // Printer v�rdierne

	printf("Line entered ");
	puts(s);				 // Printer string



	puts("_______________________________________");


	// Tester 10 string funktioner! //
	 if( isdigit(a) )		// isdigit - Tester om given int er et tal
	 {
	      printf("\n|isdigit|a = |%d| is a digit\n", a );
	 }
	   else
	 {
	      printf("\n|isdigit|a = |%d| is not a digit\n", a );
	 }

	 if( isalpha(b) )		// isalpha - Tester om given int er et bogstav
		 {
		      printf("|isalpha|b = |%lf| is a letter\n", b );
		 }
		   else
		 {
		      printf("|isalpha|b = |%lf| is not a letter\n", b );
		 }

	 	 char m = "x";			// putchar - udskriver given char

	    printf("|putchar| Character entered: ");
	    putchar(m);


	    puts("\n|puts| S�tning printet af puts"); // puts - bruges meget til at udskrive tekst


	    char sprintfstring[SIZE]; 		// sprintf - printer givne v�rdier ind i en string, istedet for sk�rmen
	    sprintf(sprintfstring, "%d, %lf, ", a, b);

	    printf("|sprintf| Udfyldt array (sprintfstring[]), best�ende af a(%d) og b(%lf): %s\n", a, b, sprintfstring);


	    int a2; // Definerer to nye v�rdier, som sscanf skal gemme v�rdier i
	    double b2;

	    sscanf(sprintfstring, "%d, %lf", &a2, &b2);		// sscanf - scanner fra string, istedet fra tastaturet
	    printf("|sscanf| L�ste fra forrige array, og gemte v�rdierne i a2 = %d, b2 = %lf\n\n", a2, b2);


	    puts("De to strings:"); 	// Udskriver de nye strings, for overskuelighed
	    printf("sprintfstring: %s \ns: %-15s", sprintfstring, s);


	    strcpy(s, sprintfstring);		// strcpy - kopierer(overwriter) array til array

	    printf("\n\n|strcpy| Kopierer(og overwriter) sprintfstring ind i s, s�ledes s bliver: %s \n", s);



	    strcat(s, sprintfstring);	// strcat - Tilf�jer string ind i en anden string(uden at overwrite!)
	    printf("|strcat| Tilf�jer sprintfstring ind i s, s�ledes s bliver: %s\n\n", s);


	    puts("De to strings nu:");
	    printf("sprintfstring: %s \ns: %-15s", sprintfstring, s);


	    puts("\n\nLaver to nye strings");

	    const char *array1 = "A nicely long string :)"; // OBS: Bem�rk, pointer til string
	    const char *array2 = "Test";

	    puts("De to nye strings:");
	    printf("array1: %s \narray2: %s\n\n", array1, array2);


	    int ret;
	    ret = strcmp(array1, array2); 	//strcmp - sammenligner to strings ASCII v�rdier.

	    if(ret < 0)				// if return mindre end 0
	       {
	          printf("|strcmp|array1 is less than array2\nstrcmp returned -1");
	       }
	       else if(ret > 0)		// if return st�rre end 0
	       {
	          printf("|strcmp|array 1 is greater than array2\nstrcmp returned 1");
	       }
	       else					// if return = 0
	       {
	          printf("|strcmp|array1 is equal to array2\nstrcmp returned: 0");
	       }




	    puts("\n\n|strstr|");				// Viser hvilken funktion vi tester nu
	    const char key1[]= "password";		// S�gen�gle 1
	    const char key2[]= ":)";			// S�gen�gle 2
	    									// strstr - s�ger en given v�rdi i en string
	    	if( strstr(array1, key1) != NULL)	// s�ger for key1
	    	{
	    		printf("\n\n'%s'(key1) was found in '%s'\n", key1, array1);
	    	}
	    	else
	    	{
	    		printf("'%s'(key1) was not found in '%s'\n", key1, array1);
	    	}


	    	if( strstr(array1, key2) != NULL) 	// s�ger for key2
	    	{
	    		printf("'%s'(key2) was found in '%s'\n", key2, array1);
	    	}
	    	else
	    	{
	    		printf("'%s'(key2) was not found in '%s'\n", key2, array1);
	    	}


	    	system("PAUSE");
	return 0;
} // main end

Uge 6.3 opgave.c

/*
 ============================================================================
 Name        : 3.c
 Author      : 
 Version     :
 Copyright   : Your copyright notice
 Description : Hello World in C, Ansi-style
 ============================================================================
 */
#include <stdio.h>
#include <string.h>
#include <ctype.h>
#include <stdlib.h>
#define SIZE 50

int main ()	// Main start
{
	setvbuf(stdout, NULL,_IONBF, 0); // Force flush
	setvbuf(stdout, NULL, _IOLBF, 0); // Another force flush

	int a = '0'; 			// Opretter forskellige datatyper
	double b = '2';
	float c = '0';

	puts("Indtast 3 talv�rdier");
	scanf("%d%lf%f", &a, &b, &c);			// Tager input fra brugeren og gemmer
											// det i de givne datatyper

	char s[] = "Vores tekst string";

	printf("int a: %d \ndouble b: %lf \nfloat c: %f \n", a, b, c); // Printer v�rdierne

	printf("Line entered ");
	puts(s);				 // Printer string



	puts("_______________________________________");


	// Tester 10 string funktioner! //
	 if( isdigit(a) )		// isdigit - Tester om given int er et tal
	 {
	      printf("\n|isdigit|a = |%d| is a digit\n", a );
	 }
	   else
	 {
	      printf("\n|isdigit|a = |%d| is not a digit\n", a );
	 }

	 if( isalpha(b) )		// isalpha - Tester om given int er et bogstav
		 {
		      printf("|isalpha|b = |%lf| is a letter\n", b );
		 }
		   else
		 {
		      printf("|isalpha|b = |%lf| is not a letter\n", b );
		 }

	 	 char m = "x";			// putchar - udskriver given char

	    printf("|putchar| Character entered: ");
	    putchar(m);


	    puts("\n|puts| S�tning printet af puts"); // puts - bruges meget til at udskrive tekst


	    char sprintfstring[SIZE]; 		// sprintf - printer givne v�rdier ind i en string, istedet for sk�rmen
	    sprintf(sprintfstring, "%d, %lf, ", a, b);

	    printf("|sprintf| Udfyldt array (sprintfstring[]), best�ende af a(%d) og b(%lf): %s\n", a, b, sprintfstring);


	    int a2; // Definerer to nye v�rdier, som sscanf skal gemme v�rdier i
	    double b2;

	    sscanf(sprintfstring, "%d, %lf", &a2, &b2);		// sscanf - scanner fra string, istedet fra tastaturet
	    printf("|sscanf| L�ste fra forrige array, og gemte v�rdierne i a2 = %d, b2 = %lf\n\n", a2, b2);


	    puts("De to strings:"); 	// Udskriver de nye strings, for overskuelighed
	    printf("sprintfstring: %s \ns: %-15s", sprintfstring, s);


	    strcpy(s, sprintfstring);		// strcpy - kopierer(overwriter) array til array

	    printf("\n\n|strcpy| Kopierer(og overwriter) sprintfstring ind i s, s�ledes s bliver: %s \n", s);



	    strcat(s, sprintfstring);	// strcat - Tilf�jer string ind i en anden string(uden at overwrite!)
	    printf("|strcat| Tilf�jer sprintfstring ind i s, s�ledes s bliver: %s\n\n", s);


	    puts("De to strings nu:");
	    printf("sprintfstring: %s \ns: %-15s", sprintfstring, s);


	    puts("\n\nLaver to nye strings");

	    const char *array1 = "A nicely long string :)"; // OBS: Bem�rk, pointer til string
	    const char *array2 = "Test";

	    puts("De to nye strings:");
	    printf("array1: %s \narray2: %s\n\n", array1, array2);


	    int ret;
	    ret = strcmp(array1, array2); 	//strcmp - sammenligner to strings ASCII v�rdier.

	    if(ret < 0)				// if return mindre end 0
	       {
	          printf("|strcmp|array1 is less than array2\nstrcmp returned -1");
	       }
	       else if(ret > 0)		// if return st�rre end 0
	       {
	          printf("|strcmp|array 1 is greater than array2\nstrcmp returned 1");
	       }
	       else					// if return = 0
	       {
	          printf("|strcmp|array1 is equal to array2\nstrcmp returned: 0");
	       }




	    puts("\n\n|strstr|");				// Viser hvilken funktion vi tester nu
	    const char key1[]= "password";		// S�gen�gle 1
	    const char key2[]= ":)";			// S�gen�gle 2
	    									// strstr - s�ger en given v�rdi i en string
	    	if( strstr(array1, key1) != NULL)	// s�ger for key1
	    	{
	    		printf("\n\n'%s'(key1) was found in '%s'\n", key1, array1);
	    	}
	    	else
	    	{
	    		printf("'%s'(key1) was not found in '%s'\n", key1, array1);
	    	}


	    	if( strstr(array1, key2) != NULL) 	// s�ger for key2
	    	{
	    		printf("'%s'(key2) was found in '%s'\n", key2, array1);
	    	}
	    	else
	    	{
	    		printf("'%s'(key2) was not found in '%s'\n", key2, array1);
	    	}


	    	system("PAUSE");
	return 0;
} // main end