volaco

main.c

@@ -1,5 +1,5 @@
 #include "stringyreloaded.h"
 
 int main() {
-    return stringyreloaded();
+    return volaco();
 }

stringyreloaded.c

@@ -42,4 +42,75 @@ int stringyreloaded() {
     fputc('\n', fw);
     fclose(fw);
     return 0;
-}
+}
+
+int riadky() {
+    FILE *fp;
+    char stuff[25];
+
+    fp = fopen("s.txt", "w");
+    strcpy(stuff, "Toto je riadok");
+    for (int index = 1; index <= 10; index++) {
+        fprintf(fp, "%s, riadok číslo %d.\n", stuff, index);
+    }
+    fclose(fp);
+
+}
+
+int pridavanie() {
+    FILE *fp;
+    char stuff[35];
+
+    fp = fopen("s.txt", "a");
+    strcpy(stuff, "Toto je dalsi");
+    for (int index = 0; stuff[index]; index++) {
+        putc(stuff[index], fp);
+        putc('\n', fp);
+    }
+    fclose(fp);
+
+}
+
+int citanie() {
+    FILE *fp;
+    char c;
+    fp = fopen("s.txt", "r");
+    if (fp) {
+        do {
+            c = getc(fp);
+            if (c != EOF) {
+                putchar(c);
+            }
+        } while (c != EOF);
+    } else {
+        printf("s.txt neexistuje.");
+    }
+    return 0;
+}
+
+int volaco() {
+    FILE *fp;
+    char c;
+    int pocet = 1;
+    fp = fopen("s.txt", "r");
+    if (fp) {
+        printf("%d: ", pocet);
+        do {
+            c = getc(fp);
+            if (c == '\n') {
+                c = getc(fp);
+                if (!feof(fp)) {
+                    printf("\n%d: ", ++pocet);
+                }
+                ungetc(c, fp);
+            } else {
+                if (!feof(fp)) {
+                    putchar(c);
+                }
+            }
+        } while (!feof(fp));
+        fclose(fp);
+    } else {
+        printf("s.txt neexistuje");
+    }
+}

stringyreloaded.h

@@ -1 +1,5 @@
-int stringyreloaded();
+int stringyreloaded();
+int citanie();
+int riadky();
+int pridavanie();
+int volaco();