added src code

1 files changed, 32 insertions, 0 deletions

diff --git a/shift.c b/shift.c
new file mode 100644
index 0000000..c65b815
--- /dev/null
+++ b/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;
+}