VS Code launch: program does not exist

This is my file "test.c"

#define _CRT_SECURE_NO_WARNINGS
#include <stdio.h>
#include <stdlib.h>
#include <string.h>

#define MAX_STACK_SIZE 100
typedef int Element;
Element data[MAX_STACK_SIZE];
int top;

void error(char str[]){
    printf("%s\n",str);
    exit(1);
}

void init_stack(){
    top = -1;
}
int is_empty(){
    return top==-1;
}
int is_full(){
    return top == MAX_STACK_SIZE -1;
}
int size(){
    return top +1;
}
void push(Element e){
    if(is_full()){
        error("스택 포화 에러");
        data[++top] = e;
    }
}
Element pop(){
    if(is_empty()){
        error("스택 공백 에러");
        return data[top--];
    }
    
}
Element peek(){
        if(is_empty()){
        error("스택 공백 에러");
        return data[top];
        }
    }
    void print_stack(char msg[]){
        print("%s[%2d]", msg, size());
        for(int i = 0; i<size(); i++){
            printf("%2d", data[i]);
        }
        printf("\n");
    }
int main(void){
    init_stack();
    for(int i = 1; i<10; i++){
        push(i);
    }
    print_stack("스택 push 9회");
    printf("\tpop() ---> %d\n", pop());
    printf("\tpop() ---> %d\n", pop());
    printf("\tpop() ---> %d\n", pop());
    print_stack("스택 pop 3회");

    return 0;
}

and this is my launch.json:

 "version": "0.2.0",
    "configurations": [
        {
            "name": "gcc.exe build active file",
            "type": "cppdbg",
            "request": "launch",
            "program": "${fileDirname}\${fileBasenameNoExtension}.exe",
            "args": [],
            "stopAtEntry": false,
            "cwd": "${fileDirname}",
            "environment": [],
            "externalConsole": true,
            "MIMode": "gdb",
            "miDebuggerPath": "C:\\msys64\\mingw64\\bin\\gdb.exe",
            "setupCommands": [
                {
                    "description": "Enable pretty-printing for gdb",
                    "text": "-enable-pretty-printing",
                    "ignoreFailures": true
                }
            ]
        }

    ]

and this is my tasks.json:

{
    "tasks": [
        {
            "type": "cppbuild",
            "label": "C/C++: gcc.exe build active file",
            "command": "C:\\msys64\\mingw64\\bin\\gcc.exe",
            "args": [
                "-g",
                "${file}",
                "-o",
                "${fileDirname}\${fileBasenameNoExtension}.exe"
            ],
            "options": {
                "cwd": "${fileDirname}"
            },
            "problemMatcher": [
                "$gcc"
            ],
            "group": {
                "kind": "build",
                "isDefault": true
            },
            "detail": "Task generated by Debugger."
        }
    ],
    "version": "2.0.0"
}

and I've got this error message. It says: "launch: program '<path to program except the path seprators are crossed out "W" characters>' does not exist"

Can you point me where I'm wrong? I have installed c/c++&extension pack, themes, MinGW also.

You have to actually run your build task. See the Tasks: Run Task or Tasks: Run Build Task commands in the command palette.

If you want the build task to be run automatically before starting the launch config, then use the launch config preLaunchTask field (see the docs for more info).