added ws202425 courses

2024_Grundlagen_Betriebssysteme_Rechnernetze/uebung-0-stack/prog.c

@@ -0,0 +1,55 @@
+#include <stdio.h>
+#include "stack.h"
+
+int main() {
+
+    stack_t* stack = stack_create(5);
+
+    if(stack == NULL){
+        printf("Failed to create stack\n");
+        return 1;
+    }
+
+    if (stack_push(stack, 'A') != 0) {
+        printf("Error: failed to push onto stack\n");
+        stack_delete(stack);
+        return 1;
+    }
+
+    if (stack_push(stack, 'B') != 0) {
+        printf("Error: failed to push onto stack\n");
+        stack_delete(stack);
+        return 1;
+    }
+    
+    if (stack_push(stack, 'C') != 0) {
+        printf("Error: failed to push onto stack\n");
+        stack_delete(stack);
+        return 1;
+    }
+
+    printf("Stack length is %zu\n", stack_length(stack));
+
+    char popped;
+    if (stack_pop(stack, &popped) != 0){
+        printf("Error: failed to pop from stack\n");
+        stack_delete(stack);
+        return 1;
+    }
+    
+    printf("Popped element: %c\n", popped);
+
+    if (stack_pop(stack, &popped) != 0){
+        printf("Error: failed to pop from stack\n");
+        stack_delete(stack);
+        return 1;
+    }
+
+    printf("Popped element: %c\n", popped);
+
+    printf("Stack length is %zu\n", stack_length(stack));
+
+    stack_delete(stack);
+
+    return 0;
+}