10 files changed, 124 insertions, 0 deletions

diff --git a/src/ctof b/src/ctof
new file mode 100755
index 0000000..7a47ff7
--- /dev/null
+++ b/src/ctof
diff --git a/src/ctof.c b/src/ctof.c
new file mode 100644
index 0000000..e61cfcd
--- /dev/null
+++ b/src/ctof.c
@@ -0,0 +1,44 @@
+#include <stdio.h>
+#include <stdlib.h>
+#include <errno.h> // for errno
+#include <limits.h> // for INT_MAX, INT_MIN
+
+
+/*
+    F = C x 9/5 + 32
+*/
+
+int
+main(int argc, char *argv[])
+{
+
+    if (argc < 2) {
+        printf("Usage: %s number\n", argv[0]);
+        return 1;
+    }
+
+    char *endptr;
+
+    errno = 0; // reset errno
+
+    long value = strtol(argv[1], &endptr, 10); // base 10
+
+    if (endptr == argv[1]) {
+        printf("Error: No digits were found\n");
+        return 1;
+    }
+    if (*endptr != '\0') {
+        printf("Warning: Trailing characters after number: %s\n", endptr);
+        return 1;
+    }
+    if ((value == LONG_MAX || value == LONG_MIN) && errno == ERANGE) {
+        printf("Error: Number out of range\n");
+        return 1;
+    }
+
+    float fah = value * 9/5 + 32;
+
+    printf("Fahrenheit: %0.f\n", fah);
+
+    return 0;
+}
diff --git a/src/dir b/src/dir
new file mode 100755
index 0000000..7757a29
--- /dev/null
+++ b/src/dir
diff --git a/src/dir.c b/src/dir.c
new file mode 100644
index 0000000..05803fd
--- /dev/null
+++ b/src/dir.c
@@ -0,0 +1,17 @@
+#include <stdio.h>
+#include <dirent.h>
+
+int main() {
+    DIR *d;
+    struct dirent *dir;
+    d = opendir(".");
+    if (d) {
+        while ((dir = readdir(d)) != NULL) {
+            printf("%s\n", dir->d_name);
+        }
+        closedir(d);
+    } else {
+        perror("opendir");
+    }
+    return 0;
+}
diff --git a/src/main b/src/main
new file mode 100755
index 0000000..37336e8
--- /dev/null
+++ b/src/main
diff --git a/src/main.c b/src/main.c
new file mode 100644
index 0000000..30d5c61
--- /dev/null
+++ b/src/main.c
@@ -0,0 +1,25 @@
+#include <stdio.h>
+
+// Function that tries to change a number without pointer
+void noPointerChange(int num) {
+    num = 100;  // Changes local copy only
+}
+
+// Function that changes a number using pointer
+void pointerChange(int *numPtr) {
+    *numPtr = 100;  // Changes original value through pointer
+}
+
+int main() {
+    int value = 50;
+
+    printf("Before noPointerChange: %d\n", value);
+    noPointerChange(value);
+    printf("After noPointerChange: %d\n", value);  // value unchanged
+
+    printf("Before pointerChange: %d\n", value);
+    pointerChange(&value);
+    printf("After pointerChange: %d\n", value);    // value changed
+
+    return 0;
+}
diff --git a/src/main2 b/src/main2
new file mode 100755
index 0000000..c35260e
--- /dev/null
+++ b/src/main2
diff --git a/src/main2.c b/src/main2.c
new file mode 100644
index 0000000..c63efdb
--- /dev/null
+++ b/src/main2.c
@@ -0,0 +1,6 @@
+#include <stdio.h>
+
+main()
+{
+    printf("Hello C\n");
+}
diff --git a/src/shift b/src/shift
new file mode 100755
index 0000000..6429b03
--- /dev/null
+++ b/src/shift
diff --git a/src/shift.c b/src/shift.c
new file mode 100644
index 0000000..c65b815
--- /dev/null
+++ b/src/shift.c
@@ -0,0 +1,32 @@
+#include <stdio.h>
+
+void print_binary(unsigned char value) {
+    for (int i = 7; i >= 0; i--) {
+        printf("%d", (value >> i) & 1);
+    }
+    printf("\n");
+}
+
+int main() {
+    unsigned char value = 0; // start with all bits off
+    int bit;
+
+    printf("Starting value: ");
+    print_binary(value);
+
+    while (1) {
+        printf("Enter bit to toggle (0-7), or -1 to quit: ");
+        if (scanf("%d", &bit) != 1) break;
+        if (bit == -1) break;
+        if (bit < 0 || bit > 7) {
+            printf("Invalid bit.\n");
+            continue;
+        }
+
+        value ^= (1 << bit); // toggle the chosen bit
+        printf("Current value: ");
+        print_binary(value);
+    }
+
+    return 0;
+}