diff --git a/Student/task1/ll/if_hand.ll b/Student/task1/ll/if_hand.ll
index e69de29..601ddd9 100644
--- a/Student/task1/ll/if_hand.ll
+++ b/Student/task1/ll/if_hand.ll
@@ -0,0 +1,11 @@
+@a = common global i32 0, align 4
+define i32 @main() #0 {
+    store i32 10, i32* @a, align 4
+    %1 = load i32, i32* @a, align 4
+    %2 = icmp sgt i32 %1, 0
+    br i1 %2, label %3, label %4
+3:
+    ret i32 %1
+4: 
+    ret i32 0
+}
\ No newline at end of file
diff --git a/Student/task2/cpp/assign_gen.cpp b/Student/task2/cpp/assign_gen.cpp
index c30d8f1..4100493 100644
--- a/Student/task2/cpp/assign_gen.cpp
+++ b/Student/task2/cpp/assign_gen.cpp
@@ -1,3 +1,66 @@
-int main(){
+#include "BasicBlock.h"
+#include "Constant.h"
+#include "Function.h"
+#include "IRStmtBuilder.h"
+#include "Module.h"
+#include "Type.h"
+
+#include <iostream>
+#include <memory>
+
+#ifdef DEBUG
+#define DEBUG_OUTPUT std::cout << __LINE__ << std::endl;  // 输出行号的简单示例
+#else
+#define DEBUG_OUTPUT
+#endif
+
+#define CONST_INT(num) \
+    ConstantInt::create(num, module)
+
+#define CONST_FP(num) \
+    ConstantFloat::create(num, module)
+
+using namespace SysYF::IR;
+
+int main() {
+    auto module = Module::create("Assign code");  
+    auto builder = IRStmtBuilder::create(nullptr, module);
+    SysYF::Ptr<Type> Int32Type = Type::get_int32_type(module);
+    SysYF::Ptr<Type> FloatType = Type::get_float_type(module);
+
+    // main function
+    auto mainFun = Function::create(FunctionType::create(Int32Type, {}),
+                                    "main", module);
+    auto bb = BasicBlock::create(module, "entry", mainFun);
+    builder->set_insert_point(bb);
+    auto retAlloca = builder->create_alloca(Int32Type);
+
+    // b = 1.8
+    auto bAlloca = builder->create_alloca(FloatType);
+    builder->create_store(CONST_FP(1.8), bAlloca);
+
+    // a[2] = {2}
+    auto arrayType_a = ArrayType::get(Int32Type, 2);
+    auto aAlloca = builder->create_alloca(arrayType_a);
+    auto a0Gep = builder->create_gep(aAlloca, {CONST_INT(0), CONST_INT(0)});
+    builder->create_store(CONST_INT(2), a0Gep);
+
+    // a[0] * b
+    auto a0Load = builder->create_load(a0Gep);
+    auto a0Float = builder->create_sitofp(a0Load, FloatType);
+    auto bLoad = builder->create_load(FloatType, bAlloca);
+    auto a1res = builder->create_fmul(a0Float, bLoad);
+
+    // store to a[1]
+    auto a1res_int = builder->create_fptosi(a1res, Int32Type);
+    auto a1Gep = builder->create_gep(aAlloca, {CONST_INT(0), CONST_INT(1)});
+    builder->create_store(a1res_int, a1Gep);
+
+    // ret
+    builder->create_store(a1res_int, retAlloca);
+    auto retLoad = builder->create_load(retAlloca);
+    builder->create_ret(retLoad);
+
+    std::cout << module->print();
     return 0;
 }
diff --git a/Student/task2/cpp/if_gen.cpp b/Student/task2/cpp/if_gen.cpp
index c30d8f1..208bc6e 100644
--- a/Student/task2/cpp/if_gen.cpp
+++ b/Student/task2/cpp/if_gen.cpp
@@ -1,3 +1,61 @@
-int main(){
+#include "BasicBlock.h"
+#include "Constant.h"
+#include "Function.h"
+#include "IRStmtBuilder.h"
+#include "Module.h"
+#include "Type.h"
+
+#include <iostream>
+#include <memory>
+
+#ifdef DEBUG
+#define DEBUG_OUTPUT std::cout << __LINE__ << std::endl;  // 输出行号的简单示例
+#else
+#define DEBUG_OUTPUT
+#endif
+
+#define CONST_INT(num) \
+    ConstantInt::create(num, module)
+
+#define CONST_FP(num) \
+    ConstantFloat::create(num, module)
+
+using namespace SysYF::IR;
+
+int main() {
+    auto module = Module::create("If code");
+    auto builder = IRStmtBuilder::create(nullptr, module);
+    SysYF::Ptr<Type> Int32Type = Type::get_int32_type(module);
+    SysYF::Ptr<Type> FloatType = Type::get_float_type(module);
+
+    auto zero_initializer = ConstantZero::create(Int32Type, module);
+    auto a = GlobalVariable::create("a", module, Int32Type, false, zero_initializer);
+
+    // main function
+    auto mainFun = Function::create(FunctionType::create(Int32Type, {}),
+                                    "main", module);
+    auto bb = BasicBlock::create(module, "entry", mainFun);
+    builder->set_insert_point(bb);
+    auto retAlloca = builder->create_alloca(Int32Type);
+
+    // store 10 to a
+    builder->create_store(CONST_INT(10), a);
+    auto aValue = builder->create_load(a);
+
+    // if(a > 0)
+    auto icmp = builder->create_icmp_gt(aValue, CONST_INT(0));
+    auto trueBB = BasicBlock::create(module, "trueBB_if", mainFun);    // true分支
+    auto falseBB = BasicBlock::create(module, "falseBB_if", mainFun);  // false分支
+    builder->create_cond_br(icmp, trueBB, falseBB);  // 条件BR
+
+    // if true return a
+    builder->set_insert_point(trueBB);
+    builder->create_ret(aValue);
+
+    // if false return 0
+    builder->set_insert_point(falseBB);
+    builder->create_ret(CONST_INT(0));
+
+    std::cout << module->print();
     return 0;
 }