This commit is contained in:
Bora Zuenbuelkoek 2025-05-26 13:01:51 +02:00
parent 9242c7e4a0
commit 2c14751863
6 changed files with 432 additions and 1 deletions

81
28.4.3_romzahl.c Normal file
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#include <stdio.h>
// Struktur zur Abbildung von arabisch → römisch
typedef struct {
int wert;
const char *zeichen;
} Roemisch;
// Tabelle in absteigender Reihenfolge
Roemisch roemischTabelle[] = {
{1000, "M"},
{900, "CM"},
{500, "D"},
{400, "CD"},
{100, "C"},
{90, "XC"},
{50, "L"},
{40, "XL"},
{10, "X"},
{9, "IX"},
{5, "V"},
{4, "IV"},
{1, "I"}
};
// Hauptfunktion
int main() {
int zahl;
printf("Zu wandelnde Zahl: ");
scanf("%d", &zahl);
if (zahl <= 0 || zahl > 3999) {
printf("Nur Zahlen zwischen 1 und 3999 erlaubt!\n");
return 1;
}
printf("... %d = ", zahl);
for (int i = 0; i < sizeof(roemischTabelle) / sizeof(Roemisch); i++) {
while (zahl >= roemischTabelle[i].wert) {
printf("%s", roemischTabelle[i].zeichen);
zahl -= roemischTabelle[i].wert;
}
}
printf("\n");
return 0;
}

172
28.6.3_wortstat.c Normal file
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#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <ctype.h>
#define MAXWORT 100
// Baumstruktur für ein Wort
typedef struct BaumKnoten {
char *wort;
int anzahl;
struct BaumKnoten *links;
struct BaumKnoten *rechts;
} BaumKnoten;
// Neues Wort in den Baum einfügen oder Zähler erhöhen
BaumKnoten* einfuegen(BaumKnoten *wurzel, const char *wort) {
if (wurzel == NULL) {
BaumKnoten *neu = malloc(sizeof(BaumKnoten));
if (!neu) {
perror("Speicherfehler");
exit(EXIT_FAILURE);
}
neu->wort = strdup(wort);
neu->anzahl = 1;
neu->links = neu->rechts = NULL;
return neu;
}
int cmp = strcmp(wort, wurzel->wort);
if (cmp == 0) {
wurzel->anzahl++;
} else if (cmp < 0) {
wurzel->links = einfuegen(wurzel->links, wort);
} else {
wurzel->rechts = einfuegen(wurzel->rechts, wort);
}
return wurzel;
}
// Inorder-Ausgabe des Baumes
void ausgabe(BaumKnoten *wurzel) {
if (wurzel == NULL)
return;
ausgabe(wurzel->links);
printf("%-12s : %d\n", wurzel->wort, wurzel->anzahl);
ausgabe(wurzel->rechts);
}
// Speicher freigeben
void freigeben(BaumKnoten *wurzel) {
if (wurzel == NULL)
return;
freigeben(wurzel->links);
freigeben(wurzel->rechts);
free(wurzel->wort);
free(wurzel);
}
// Nur Buchstaben akzeptieren
int istBuchstabe(char c) {
return isalpha((unsigned char)c);
}
// Einlesen der Wörter aus stdin
void liesTextUndErzeugeStatistik() {
char wort[MAXWORT];
int index = 0;
int c;
BaumKnoten *baum = NULL;
while ((c = getchar()) != EOF) {
if (istBuchstabe(c)) {
if (index < MAXWORT - 1)
wort[index++] = tolower(c);
} else if (index > 0) {
wort[index] = '\0';
baum = einfuegen(baum, wort);
index = 0;
}
}
// letztes Wort, falls am Ende kein Trennzeichen
if (index > 0) {
wort[index] = '\0';
baum = einfuegen(baum, wort);
}
ausgabe(baum);
freigeben(baum);
}
// Hauptfunktion
int main() {
liesTextUndErzeugeStatistik();
return 0;
}
//gcc -o wortstat wortstat.c
//./wortstat < schwafel.txt

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#include <stdio.h>
#include "complex.h" // Eigene Header-Datei für komplexe Zahlen
#include "complex.h"
int main() {
double re1, im1, re2, im2;

62
TestMatricOp.c Normal file
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#include <stdio.h>
#include "matrixOp.h"
int main() {
Matrix *a = CreateMatrix(2, 3, 1.0);
Matrix *b = CreateMatrix(2, 3, 7.0);
Matrix *c, *d, *e, *f;
printf("Matrix a:\n");
PrintMatrix(a);
printf("Matrix b:\n");
PrintMatrix(b);
c = AddMatrix(a, b);
printf("a + b:\n");
PrintMatrix(c);
d = SubMatrix(a, b);
printf("a - b:\n");
PrintMatrix(d);
e = TransposeMatrix(a);
printf("Transpose of a:\n");
PrintMatrix(e);
f = MulMatrix(a, e);
printf("a * a^T:\n");
PrintMatrix(f);
printf("det(a * a^T): %.2f\n", DetMatrix(f));
FreeMatrix(a);
FreeMatrix(b);
FreeMatrix(c);
FreeMatrix(d);
FreeMatrix(e);
FreeMatrix(f);
return 0;
}

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matrixOp.c Normal file
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#include <stdio.h>
#include <stdlib.h>
#include <time.h>
#include "matrixOp.h"
Matrix* CreateMatrixZero(int rows, int cols) {
Matrix *m = malloc(sizeof(Matrix));
m->rows = rows;
m->cols = cols;
m->data = malloc(rows * sizeof(double*));
for (int i = 0; i < rows; i++) {
m->data[i] = calloc(cols, sizeof(double));
}
return m;
}
Matrix* CreateMatrixRand(int rows, int cols) {
srand(time(NULL));
Matrix *m = CreateMatrixZero(rows, cols);
for (int i = 0; i < rows; i++) {
for (int j = 0; j < cols; j++) {
m->data[i][j] = (rand() % 200 - 100) / 1.0; // -100 bis 99
}
}
return m;
}
Matrix* CreateMatrix(int rows, int cols, double startValue) {
Matrix *m = CreateMatrixZero(rows, cols);
double val = startValue;
for (int i = 0; i < rows; i++) {
for (int j = 0; j < cols; j++) {
m->data[i][j] = val++;
}
}
return m;
}
void FreeMatrix(Matrix *m) {
for (int i = 0; i < m->rows; i++) {
free(m->data[i]);
}
free(m->data);
free(m);
}
void PrintMatrix(Matrix *m) {
for (int i = 0; i < m->rows; i++) {
for (int j = 0; j < m->cols; j++) {
printf("%6.2f ", m->data[i][j]);
}
printf("\n");
}
}
Matrix* AddMatrix(Matrix *a, Matrix *b) {
if (a->rows != b->rows || a->cols != b->cols) return NULL;
Matrix *m = CreateMatrixZero(a->rows, a->cols);
for (int i = 0; i < m->rows; i++) {
for (int j = 0; j < m->cols; j++) {
m->data[i][j] = a->data[i][j] + b->data[i][j];
}
}
return m;
}
Matrix* SubMatrix(Matrix *a, Matrix *b) {
if (a->rows != b->rows || a->cols != b->cols) return NULL;
Matrix *m = CreateMatrixZero(a->rows, a->cols);
for (int i = 0; i < m->rows; i++) {
for (int j = 0; j < m->cols; j++) {
m->data[i][j] = a->data[i][j] - b->data[i][j];
}
}
return m;
}
Matrix* TransposeMatrix(Matrix *a) {
Matrix *m = CreateMatrixZero(a->cols, a->rows);
for (int i = 0; i < a->rows; i++) {
for (int j = 0; j < a->cols; j++) {
m->data[j][i] = a->data[i][j];
}
}
return m;
}
Matrix* MulMatrix(Matrix *a, Matrix *b) {
if (a->cols != b->rows) return NULL;
Matrix *m = CreateMatrixZero(a->rows, b->cols);
for (int i = 0; i < a->rows; i++) {
for (int j = 0; j < b->cols; j++) {
for (int k = 0; k < a->cols; k++) {
m->data[i][j] += a->data[i][k] * b->data[k][j];
}
}
}
return m;
}
double DetMatrix(Matrix *m) {
if (m->rows != m->cols) return 0;
if (m->rows == 2) {
return m->data[0][0] * m->data[1][1] - m->data[0][1] * m->data[1][0];
}
// Optional: Erweiterung für n > 2
return 0;
}

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matrixOp.h Normal file
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#ifndef MATRIX_OP_H
#define MATRIX_OP_H
typedef struct {
int rows;
int cols;
double **data;
} Matrix;
Matrix* CreateMatrixZero(int rows, int cols);
Matrix* CreateMatrixRand(int rows, int cols);
Matrix* CreateMatrix(int rows, int cols, double startValue);
void FreeMatrix(Matrix *m);
void PrintMatrix(Matrix *m);
Matrix* AddMatrix(Matrix *a, Matrix *b);
Matrix* SubMatrix(Matrix *a, Matrix *b);
Matrix* TransposeMatrix(Matrix *a);
Matrix* MulMatrix(Matrix *a, Matrix *b);
double DetMatrix(Matrix *m);
#endif