feat: Initial commit

Laboratorio 1/EsempioIO.c

@@ -0,0 +1,43 @@
+#include <stdio.h>
+int main()
+{
+    FILE *fp_read, *fp_write;
+    char file_char, choice;
+    if ((fp_read = fopen("../Guide.txt", "r")) == NULL)
+    {
+        printf("Error opening file\n");
+        return 1;
+    }
+    if ((fp_write = fopen("../Output.txt", "w")) == NULL)
+    {
+        printf("Error opening file\n");
+        return 2;
+    }
+    printf("Print on console (C) or on file (F):");
+    choice = getchar();
+    while (!feof(fp_read))
+    {
+        file_char = fgetc(fp_read);
+        if (!feof(fp_read))
+        {
+            switch (choice)
+            {
+            case 'C':
+                printf("\nChar printed on the console: %c",
+                       file_char);
+                break;
+            case 'F':
+                fputc(file_char, fp_write);
+                printf("\nChar saved on file: ");
+                putchar(file_char);
+                break;
+            default:
+                printf("Wrong choice\n");
+                return 3;
+            }
+        }
+    }
+    fclose(fp_read);
+    fclose(fp_write);
+    return 0;
+}