diff --git "a/C++/codes/2024-07/\351\273\204\345\261\261/.gitignore" "b/C++/codes/2024-07/\351\273\204\345\261\261/.gitignore"
new file mode 100644
index 0000000000000000000000000000000000000000..1cb83798b6420225ff38b8b0a8ad98d3ef42ebfd
--- /dev/null
+++ "b/C++/codes/2024-07/\351\273\204\345\261\261/.gitignore"
@@ -0,0 +1,2 @@
+bin/
+build/
\ No newline at end of file
diff --git "a/C++/codes/2024-07/\351\273\204\345\261\261/chapter7/CMakeLists.txt" "b/C++/codes/2024-07/\351\273\204\345\261\261/chapter7/CMakeLists.txt"
new file mode 100644
index 0000000000000000000000000000000000000000..ebf35c2118756ea67b4d4a25bddc1780288d70da
--- /dev/null
+++ "b/C++/codes/2024-07/\351\273\204\345\261\261/chapter7/CMakeLists.txt"
@@ -0,0 +1,5 @@
+PROJECT(exercises_7_10)
+SET(SRC_LIST src/7-10.cpp)
+ADD_EXECUTABLE(exercise_7_10 ${SRC_LIST})
+
+set_target_properties(exercise_7_10 PROPERTIES RUNTIME_OUTPUT_DIRECTORY "${CMAKE_SOURCE_DIR}/bin")
diff --git "a/C++/codes/2024-07/\351\273\204\345\261\261/chapter7/src/7-10.cpp" "b/C++/codes/2024-07/\351\273\204\345\261\261/chapter7/src/7-10.cpp"
new file mode 100644
index 0000000000000000000000000000000000000000..1278b22869e85cafbec05e059099919e38d74795
--- /dev/null
+++ "b/C++/codes/2024-07/\351\273\204\345\261\261/chapter7/src/7-10.cpp"
@@ -0,0 +1,33 @@
+#include<iostream>
+
+using namespace std;
+
+double add(double x, double y){
+    return x + y;
+}
+
+double multiply(double x, double y){
+    return x * y;
+}
+
+double calculate(double x, double y, double (*pf)(double, double)){
+    return pf(x, y);
+}
+
+int main(int argc, char **argv){
+    double x, y;
+    while (true)
+    {
+        std::cout << "请输入两个数字（用空格分隔）: ";
+        if(!(cin>>x>>y)){
+            cout << "输入格式错误，退出" << endl;
+            break;
+        }
+
+        double sum = calculate(x, y, add);
+        double product = calculate(x, y, multiply);
+        cout << x << "+" << y << "=" << sum << endl;
+        cout << x << "*" << y << "=" << product << endl;
+    }
+    return 0;
+}
\ No newline at end of file
diff --git "a/C++/codes/2024-07/\351\273\204\345\261\261/chapter8/CMakeLists.txt" "b/C++/codes/2024-07/\351\273\204\345\261\261/chapter8/CMakeLists.txt"
new file mode 100644
index 0000000000000000000000000000000000000000..53ac84f583b5b29e2e32644b81f5e3b379266c6d
--- /dev/null
+++ "b/C++/codes/2024-07/\351\273\204\345\261\261/chapter8/CMakeLists.txt"
@@ -0,0 +1,19 @@
+cmake_minimum_required(VERSION 3.10)
+project(chapter8)
+
+set(SOURCE_DIR ${CMAKE_SOURCE_DIR}/src)
+set(BINARY_DIR ${CMAKE_SOURCE_DIR}/bin)
+
+file(MAKE_DIRECTORY ${BINARY_DIR})
+
+file(GLOB SOURCES "${SOURCE_DIR}/*.cpp")
+
+foreach(SOURCE_FILE ${SOURCES})
+    get_filename_component(FILENAME ${SOURCE_FILE} NAME_WE)
+    
+    add_executable("exercise_${FILENAME}" ${SOURCE_FILE})
+
+    set_target_properties("exercise_${FILENAME}" PROPERTIES
+        RUNTIME_OUTPUT_DIRECTORY ${BINARY_DIR}
+    )
+endforeach()
diff --git "a/C++/codes/2024-07/\351\273\204\345\261\261/chapter8/src/8-4.cpp" "b/C++/codes/2024-07/\351\273\204\345\261\261/chapter8/src/8-4.cpp"
new file mode 100644
index 0000000000000000000000000000000000000000..b34f61d5f9db245b8ee6639b344df51d4ad3a7a9
--- /dev/null
+++ "b/C++/codes/2024-07/\351\273\204\345\261\261/chapter8/src/8-4.cpp"
@@ -0,0 +1,48 @@
+#include<iostream>
+#include<cstring>
+using namespace std;
+
+struct stringy
+{
+    char *str; //points to a string
+    int ct; //lenght of string(not counting '\0')
+};
+
+void set(stringy& to_string, char* from_string){
+    int length_str = 0;
+    while (from_string[length_str] != '\0'){
+        length_str++;
+    }
+    char *copy_string = new char[length_str + 1];
+    for (int i = 0; i < length_str+1;++i){
+        copy_string[i] = from_string[i];
+    }
+    to_string.str = copy_string;
+    to_string.ct = length_str;
+}
+
+void show(stringy &string, int count=1){
+    for (int i = 0; i < count;++i){
+        cout << string.str << endl;
+    }
+}
+
+void show(char *string, int count=1){
+    for (int i = 0; i < count;++i){
+        cout << string << endl;
+    }
+}
+
+int main(){
+    stringy beany;
+    char testing[] = "Reality isn't what it used to be.";
+    set(beany, testing);
+    show(beany);
+    show(beany, 2);
+    testing[0] = 'D';
+    testing[1] = 'u';
+    show(testing);
+    show(testing, 3);
+    show("Done!");
+    return 0;
+}
\ No newline at end of file
diff --git "a/C++/codes/2024-07/\351\273\204\345\261\261/chapter8/src/8-6.cpp" "b/C++/codes/2024-07/\351\273\204\345\261\261/chapter8/src/8-6.cpp"
new file mode 100644
index 0000000000000000000000000000000000000000..ebb76ec7ede25f9616dad0332f7887d61597be1d
--- /dev/null
+++ "b/C++/codes/2024-07/\351\273\204\345\261\261/chapter8/src/8-6.cpp"
@@ -0,0 +1,40 @@
+#include<iostream>
+#include<string.h>
+using namespace std;
+
+template<typename T>
+T maxn(T *nums, int counts){
+    int max_i = 0;
+    for (int i = 1; i < counts;++i){
+        if(nums[i] > nums[max_i]){
+            max_i = i;
+        }
+    }
+    return nums[max_i];
+}
+
+template<>
+char* maxn(char** strings, int counts){
+    int max_i = 0;
+    for (int i = 1; i < counts;++i){
+        if(strlen(strings[i]) > strlen(strings[i])){
+            max_i = i;
+        }
+    }
+    return strings[max_i];
+}
+
+int main(int argc, char** argv){
+    int int_arrays[6] = {0, 2, 3, 1, 5, 4};
+    double double_arrays[4] = {0.5, -1.4, 4.5, 3.9};
+    char *string_arrays[5] = {"hello", "world", "str", "bool", "int"};
+
+    int max_int = maxn(int_arrays, 6);
+    double max_double = maxn(double_arrays, 4);
+    char *max_string = maxn(string_arrays, 5);
+
+    cout << "max int: " << max_int << endl;
+    cout << "max_double: " << max_double << endl;
+    cout << "max_string: " << max_string << endl;
+    return 0;
+}
\ No newline at end of file