Upload files to "OS/C/Week5"

OS/C/Week5/q3.c

@@ -0,0 +1,87 @@
+// os exec libraries
+#include <unistd.h>
+#include <sys/types.h>
+#include <sys/wait.h>
+
+// std C libraries
+#include <stdio.h>
+#include <string.h>
+#include <stdlib.h>
+
+// bubble sort
+void bubble(char *arr[], int n) {
+	int i,j;
+	for (i = 0; i < n - 1; i++) {
+		for (j = 0; j < n - i - 1; j++) {
+            		if (strcmp(arr[j], arr[j + 1]) > 0) {
+                		char *temp = arr[j];
+                		arr[j] = arr[j + 1];
+                		arr[j + 1] = temp;
+            		}
+        	}
+    	}
+    	for(i=0;i<n;i++){
+        	printf("%s ",arr[i]);
+    	}
+}
+
+
+void selection(char *arr[], int n) {
+	int i,j;
+    	for (i = 0; i < n - 1; i++) {
+        	int min_idx = i;
+        	for (j = i + 1; j < n; j++) {
+            		if (strcmp(arr[j], arr[min_idx]) < 0) {
+                	min_idx = j;
+            		}
+        	}
+		char *temp = arr[min_idx];
+        	arr[min_idx] = arr[i];
+        	arr[i] = temp;
+    	}
+    	for(i=0;i<n;i++){
+        	printf("%s ",arr[i]);
+    	}
+}
+
+int main() {
+	int N,i;
+
+    	printf("Enter the number of strings:\n ");
+    	scanf("%d", &N);
+
+	char **strings = (char **)malloc(N * sizeof(char *));
+	printf("Enter %d strings:\n", N);
+
+	for (i = 0; i < N; i++) {
+        	strings[i] = (char *)malloc(100 * sizeof(char));
+        	printf("String %d: ", i + 1);
+        	scanf("%s", strings[i]);
+    	}
+
+	pid_t pid1;
+    	pid_t pid2;
+
+	int status;
+    	pid1=fork();
+
+	if (pid1 == 0) {
+        	printf("\nFirst child: Bubble sort\n");
+        	bubble(strings,N);
+        	exit(0);
+    	} else if (pid1 > 0) {
+        	pid2 = fork();
+        	if (pid2 == 0) {
+            		printf("\nSecond child: Selection sort\n");
+            		selection(strings,N);
+            		exit(0);
+        	} else if (pid2 > 0) {
+            		wait(&status);
+            		printf("\n Parent: Child process terminated\n");
+        	} else {
+            		printf("The system encountered an error.");
+        	}
+    	} else {
+        	printf("Error");
+    	}
+}