Quicksort and file rearrange

Lab1/selection.c

@@ -0,0 +1,36 @@
+#include <stdio.h>
+#include <stdlib.h>
+
+int main() {
+  int s;
+  int res = scanf("%d", &s);
+  if (res != 1) {
+    fprintf(stderr, "Error reading size\n");
+    return 1;
+  }
+
+  int *array = malloc(sizeof(int) * s);
+  for (int i = 0; i < s; i++) {
+    res = scanf("%d", &array[i]);
+    if (res != 1) {
+      fprintf(stderr, "Error reading array element\n");
+      free(array);
+      return 1;
+    }
+  }
+
+  for (int j = s; j > 1; j--) {
+    int max = j;
+    for (int i = j - 1; i >= 0; i--) {
+      if (array[i] > array[max]) {
+        max = i;
+      };
+    };
+    int temp = array[j];
+    array[j] = array[max];
+    array[max] = temp;
+  }
+
+  free(array);
+  return 0;
+}