diff --git a/YZM502/final/soru1/.gitignore b/YZM502/final/soru1/.gitignore
new file mode 100644
index 0000000..683bcc5
--- /dev/null
+++ b/YZM502/final/soru1/.gitignore
@@ -0,0 +1,69 @@
+### C template
+# Prerequisites
+*.d
+
+# Object files
+*.o
+*.ko
+*.obj
+*.elf
+
+# Linker output
+*.ilk
+*.map
+*.exp
+
+# Precompiled Headers
+*.gch
+*.pch
+
+# Libraries
+*.lib
+*.a
+*.la
+*.lo
+
+# Shared objects (inc. Windows DLLs)
+*.dll
+*.so
+*.so.*
+*.dylib
+
+# Executables
+*.exe
+*.out
+*.app
+*.i*86
+*.x86_64
+*.hex
+
+# Debug files
+*.dSYM/
+*.su
+*.idb
+*.pdb
+
+# Kernel Module Compile Results
+*.mod*
+*.cmd
+.tmp_versions/
+modules.order
+Module.symvers
+Mkfile.old
+dkms.conf
+
+### CMake template
+CMakeLists.txt.user
+CMakeCache.txt
+CMakeFiles
+CMakeScripts
+Testing
+Makefile
+cmake_install.cmake
+install_manifest.txt
+compile_commands.json
+CTestTestfile.cmake
+_deps
+
+/cmake-build-debug/
+/.idea/
\ No newline at end of file
diff --git a/YZM502/final/soru1/CMakeLists.txt b/YZM502/final/soru1/CMakeLists.txt
new file mode 100644
index 0000000..b8904f7
--- /dev/null
+++ b/YZM502/final/soru1/CMakeLists.txt
@@ -0,0 +1,7 @@
+cmake_minimum_required(VERSION 3.24)
+project(soru1 C)
+
+set(CMAKE_C_STANDARD 11)
+
+add_executable(soru1 main.c)
+target_link_libraries(soru1 PRIVATE m)
diff --git a/YZM502/final/soru1/main.c b/YZM502/final/soru1/main.c
new file mode 100644
index 0000000..22454fd
--- /dev/null
+++ b/YZM502/final/soru1/main.c
@@ -0,0 +1,123 @@
+#include <stdio.h>
+#include <math.h>
+
+int fibbonacci(int n) {
+    if (n == 0) {
+        return 0;
+    } else if (n == 1) {
+        return 1;
+    } else {
+        return (fibbonacci(n - 1) + fibbonacci(n - 2));
+    }
+}
+
+void fibbonacciYaz() {
+    int n, i;
+    printf("Bir sayi giriniz: ");
+    scanf("%d", &n);
+
+    for (i = 0; i <= n; i++) {
+        printf("\nIndex: %d | Fibbonacci: %d", i, fibbonacci(i));
+    }
+}
+
+
+int faktoryel(long sayi) {
+    if (sayi <= 1) {
+        return sayi;
+    } else {
+        return (sayi * faktoryel(sayi - 1));
+    }
+}
+
+void faktoryelFormul() {
+    int n;
+    printf("Bir sayi giriniz: ");
+    scanf("%d", &n);
+
+    long nFak;
+    long nEksiBirFak;
+    long nArtiBirFak;
+    double sonuc;
+
+    nFak = faktoryel(n);
+    nEksiBirFak = faktoryel(n - 1);
+    nArtiBirFak = faktoryel(n + 1);
+
+    sonuc = ((nFak * nEksiBirFak) * 1.0) / nArtiBirFak;
+
+    printf("\n*******************************");
+    printf("\n Formül Soucu : %.6f", sonuc);
+    printf("\n n: %d | n+1: %d | n-1: %d", nFak, nArtiBirFak, nEksiBirFak);
+    printf("\n*******************************");
+}
+
+void kokluFormul() {
+    int a;
+    int b;
+    int c;
+    double sonuc;
+
+    printf("a: ");
+    scanf("%d", &a);
+
+    printf("b: ");
+    scanf("%d", &b);
+
+    printf("c: ");
+    scanf("%d", &c);
+
+    double p1, p2, p3;
+
+    p1 = (-1 * b);
+    p2 = sqrt((b * b) - (4 * a * c));
+    p3 = (2 * a);
+
+    sonuc = (p1 + p2) / p3;
+
+    printf("\n*******************************");
+    printf("\n Formül Soucu : %.10f", sonuc);
+    printf("\n*******************************");
+}
+
+int menu() {
+    int secim = 0;
+
+    printf("\n\n-------------------------------------------------\n");
+    printf("(1) Fibonacci dizimi hesaplama \n");
+    printf("(2) n!(n-1)!/(n+1)! hesaplama \n");
+    printf("(3) Formül hesaplama \n");
+    printf("ÇIKIŞ İÇİN : -1 \n");
+    printf("-------------------------------------------------\n\n");
+
+    printf("Seçiminizi Giriniz: ");
+
+    do {
+        scanf("%d", &secim);
+        if ((secim < 1 || secim > 3) && (secim != -1)) {
+            printf("\nYanlış değer girdiniz tekrar giriş yapınız: ");
+        }
+
+    } while ((secim < 1 || secim > 3) && (secim != -1));
+    return secim;
+}
+
+void main() {
+    int secim = 0;
+
+    do {
+        secim = menu();
+        switch (secim) {
+            case 1:
+                fibbonacciYaz();
+                break;
+            case 2:
+                faktoryelFormul();
+                break;
+            case 3:
+                kokluFormul();
+                break;
+        }
+    } while (secim != -1);
+
+}
\ No newline at end of file