test

test.c

#include <stdio.h>
#include <stdlib.h>

#define MAX 66

struct Personal {
	char Vorname[MAX];
	char Nachname[MAX];
	int Alter;
	double Gehalt;
};

int countLetter(char *str, char c)
{
	int n = 0;

	while (*str != '\0') {
		if (*str == c)
			n++;
		str++;
	}

	return n;
}

void replSpace(char *str, char c)
{
	while (*str != '\0') {
		if (*str == ' ')
			*str = c;
		str++;
	}
}

void fillStruct(struct Personal *ptr)
{
	printf("Vorname: ");
	scanf("%s", ptr->Vorname);

	printf("Nachname: ");
	scanf("%s", ptr->Nachname);

	int alter;
	printf("Alter: ");
	scanf("%d", &alter);
	ptr->Alter = alter;

	double gehalt;
	printf("Gehalt: ");
	scanf("%lf", &gehalt);
	ptr->Gehalt = gehalt;
}

void sortNumbers(int *arr, int len)
{
	int tmp;

	for (int i = len - 1; i >= 0; i--) {
		for (int j = 0; j < i; j++) {
			if (arr[j] < arr[j + 1]) {
				tmp = arr[j];
				arr[j] = arr[j + 1];
				arr[j + 1] = tmp;
			}
		}
	}

	for (int i = 0; i < len; i++)
		printf("%d\n", arr[i]);
}

int main(void)
{
	// 2)
	char test[20] = "Hello World!";
	replSpace(test, '_');
	printf("%s\n", test);

	// 3)
	printf("%d\n", countLetter(test, 'l'));

	// 4 + 5)
	struct Personal *p;
	p = malloc(sizeof(struct Personal));
	fillStruct(p);
	printf("Vorname: %s\nNachname: %s\nAlter: %d\nGehalt: %.2f\n", 
	       p->Vorname, p->Nachname, p->Alter, p->Gehalt);

	// 6)
	int arr[] = { 3, 2, 1, 6, 5, 4 };
	sortNumbers(arr, sizeof(arr)/sizeof(arr[0]));

	return 0;
}

// vim: set ft=c :