prime count function

.vscode/launch.json

@@ -0,0 +1,26 @@
+{
+    // Use IntelliSense to learn about possible attributes.
+    // Hover to view descriptions of existing attributes.
+    // For more information, visit: https://go.microsoft.com/fwlink/?linkid=830387
+    "version": "0.2.0",
+    "configurations": [
+        {
+            "name": "C/C++ Debug (gdb Launch)",
+            "type": "cppdbg",
+            "request": "launch",
+            "program": "${workspaceFolder}/build/primetest.exe",
+            "args": [],
+            "stopAtEntry": true,
+            "cwd": "${workspaceFolder}",
+            "environment": [],
+            "MIMode": "gdb",
+            "setupCommands": [
+                {
+                    "description": "Enable pretty-printing for gdb",
+                    "text": "-enable-pretty-printing",
+                    "ignoreFailures": true
+                }
+            ]
+        }
+    ]
+}

CMakeLists.txt

@@ -0,0 +1,18 @@
+# CMakeList.txt : CMake project for xtfs, include source and define
+# project specific logic here.
+#
+cmake_minimum_required (VERSION 3.16)
+
+
+project ("primetest")
+
+# Add source to this project's executable.s
+
+add_executable (primetest "src/primetest.cpp")
+
+set_property(TARGET primetest PROPERTY CXX_STANDARD 17)
+set_property(TARGET primetest PROPERTY CXX_STANDARD_REQUIRED ON)
+set_property(TARGET primetest PROPERTY CXX_EXTENSIONS OFF)
+
+
+# TODO: Add tests and install targets if needed.

src/primetest.cpp

@@ -0,0 +1,27 @@
+#include<iostream>
+
+using std::cout;
+
+class Solution {
+    public:
+    static int countPrime(int n){
+        int cntout = 0;
+        for( int icnt = 2; ( icnt <= n ); icnt++ ){
+            int ts = 0;
+            for ( int it=icnt; it > 1; --it ){
+                if( (icnt % it) == 0 ) {
+                    ts = ts + 1;
+                }
+            }
+            if( ts==1 ){
+                cntout = cntout + 1;
+            }
+        }
+        return cntout;
+    }
+};
+
+int main(int argc, char** argv){
+        std::cout << Solution::countPrime(50000) << std::endl;
+    
+}