diff --git a/test/test_case/case_lab3_1/array_1d.out b/test/test_case/case_lab3_1/array_1d.out
new file mode 100644
index 0000000..3674aab
--- /dev/null
+++ b/test/test_case/case_lab3_1/array_1d.out
@@ -0,0 +1,2 @@
+0 1 4 9 16 
+0
diff --git a/test/test_case/case_lab3_1/array_1d.sy b/test/test_case/case_lab3_1/array_1d.sy
new file mode 100644
index 0000000..2850075
--- /dev/null
+++ b/test/test_case/case_lab3_1/array_1d.sy
@@ -0,0 +1,16 @@
+int a[5];
+int main() {
+    int i = 0;
+    while (i < 5) {
+        a[i] = i * i;
+        i = i + 1;
+    }
+    i = 0;
+    while (i < 5) {
+        putint(a[i]);
+        putch(32);
+        i = i + 1;
+    }
+    putch(10);
+    return 0;
+}
diff --git a/test/test_case/case_lab3_1/div_mod.out b/test/test_case/case_lab3_1/div_mod.out
new file mode 100644
index 0000000..27da0f8
--- /dev/null
+++ b/test/test_case/case_lab3_1/div_mod.out
@@ -0,0 +1,2 @@
+13 7 30 3 1
+0
diff --git a/test/test_case/case_lab3_1/div_mod.sy b/test/test_case/case_lab3_1/div_mod.sy
new file mode 100644
index 0000000..4f964e0
--- /dev/null
+++ b/test/test_case/case_lab3_1/div_mod.sy
@@ -0,0 +1,10 @@
+int main() {
+    int a = 10;
+    int b = 3;
+    putint(a + b); putch(32);
+    putint(a - b); putch(32);
+    putint(a * b); putch(32);
+    putint(a / b); putch(32);
+    putint(a % b); putch(10);
+    return 0;
+}
diff --git a/test/test_case/case_lab3_1/float_calc.out b/test/test_case/case_lab3_1/float_calc.out
new file mode 100644
index 0000000..55d583a
--- /dev/null
+++ b/test/test_case/case_lab3_1/float_calc.out
@@ -0,0 +1,2 @@
+0x1.cp+1 -0x1p-1 0x1.8p+1 0x1.8p-1
+0
diff --git a/test/test_case/case_lab3_1/float_calc.sy b/test/test_case/case_lab3_1/float_calc.sy
new file mode 100644
index 0000000..98a61ab
--- /dev/null
+++ b/test/test_case/case_lab3_1/float_calc.sy
@@ -0,0 +1,9 @@
+int main() {
+    float a = 1.5;
+    float b = 2.0;
+    putfloat(a + b); putch(32);
+    putfloat(a - b); putch(32);
+    putfloat(a * b); putch(32);
+    putfloat(a / b); putch(10);
+    return 0;
+}
diff --git a/test/test_case/case_lab3_1/if_else_nested.out b/test/test_case/case_lab3_1/if_else_nested.out
new file mode 100644
index 0000000..043e571
--- /dev/null
+++ b/test/test_case/case_lab3_1/if_else_nested.out
@@ -0,0 +1,2 @@
+3
+0
diff --git a/test/test_case/case_lab3_1/if_else_nested.sy b/test/test_case/case_lab3_1/if_else_nested.sy
new file mode 100644
index 0000000..dc7e23e
--- /dev/null
+++ b/test/test_case/case_lab3_1/if_else_nested.sy
@@ -0,0 +1,19 @@
+int main() {
+    int a = 5;
+    int b = 10;
+    if (a > b) {
+        putint(1);
+    } else {
+        if (a == 5) {
+            if (b != 10) {
+                putint(2);
+            } else {
+                putint(3);
+            }
+        } else {
+            putint(4);
+        }
+    }
+    putch(10);
+    return 0;
+}
diff --git a/test/test_case/case_lab3_1/recursion.out b/test/test_case/case_lab3_1/recursion.out
new file mode 100644
index 0000000..9807191
--- /dev/null
+++ b/test/test_case/case_lab3_1/recursion.out
@@ -0,0 +1,2 @@
+8
+0
diff --git a/test/test_case/case_lab3_1/recursion.sy b/test/test_case/case_lab3_1/recursion.sy
new file mode 100644
index 0000000..67a71b8
--- /dev/null
+++ b/test/test_case/case_lab3_1/recursion.sy
@@ -0,0 +1,10 @@
+int fib(int n) {
+    if (n <= 1) return n;
+    return fib(n-1) + fib(n-2);
+}
+int main() {
+    int n = 6;
+    putint(fib(n));
+    putch(10);
+    return 0;
+}