c语言怎么打印特殊字符？

Question

vs2019
比如ascll里边254对应的是黑方块，但是我printf ("%c",254)之后就什么都没有，另外我看别人可以在printf里面直接打出方块，有的还有颜色，求问是怎么做到的？

Answer 1

#pragma comment(lib,"user32")
#pragma comment(lib,"gdi32")
#include <conio.h>
#include <stdio.h>
#include <stdlib.h>
#include <windows.h>
wchar_t a2w[256]={
0x0020,0x263a,0x263b,0x2665,0x2666,0x2663,0x2660,0x2022,
0x25d8,0x25cb,0x25d9,0x2642,0x2640,0x266a,0x266b,0x263c,
0x25ba,0x25c4,0x2195,0x203c,0x00b6,0x00a7,0x25ac,0x21a8,
0x2191,0x2193,0x2192,0x2190,0x221f,0x2194,0x25b2,0x25bc,
0x0020,0x0021,0x0022,0x0023,0x0024,0x0025,0x0026,0x0027,
0x0028,0x0029,0x002a,0x002b,0x002c,0x002d,0x002e,0x002f,
0x0030,0x0031,0x0032,0x0033,0x0034,0x0035,0x0036,0x0037,
0x0038,0x0039,0x003a,0x003b,0x003c,0x003d,0x003e,0x003f,
0x0040,0x0041,0x0042,0x0043,0x0044,0x0045,0x0046,0x0047,
0x0048,0x0049,0x004a,0x004b,0x004c,0x004d,0x004e,0x004f,
0x0050,0x0051,0x0052,0x0053,0x0054,0x0055,0x0056,0x0057,
0x0058,0x0059,0x005a,0x005b,0x005c,0x005d,0x005e,0x005f,
0x0060,0x0061,0x0062,0x0063,0x0064,0x0065,0x0066,0x0067,
0x0068,0x0069,0x006a,0x006b,0x006c,0x006d,0x006e,0x006f,
0x0070,0x0071,0x0072,0x0073,0x0074,0x0075,0x0076,0x0077,
0x0078,0x0079,0x007a,0x007b,0x007c,0x007d,0x007e,0x2302,
0x00c7,0x00fc,0x00e9,0x00e2,0x00e4,0x00e0,0x00e5,0x00e7,
0x00ea,0x00eb,0x00e8,0x00ef,0x00ee,0x00ec,0x00c4,0x00c5,
0x00e9,0x00e6,0x00c6,0x00f4,0x00f6,0x00f2,0x00fb,0x00f9,
0x00ff,0x00d6,0x00dc,0x00a2,0x00a3,0x00a5,0x20a7,0x0192,
0x00e1,0x00ed,0x00f3,0x00fa,0x00f1,0x00d1,0x00aa,0x00ba,
0x00bf,0x2310,0x00ac,0x00bd,0x00bc,0x00a1,0x00ab,0x00bb,
0x2591,0x2592,0x2593,0x2502,0x2524,0x2561,0x2562,0x2556,
0x2555,0x2563,0x2551,0x2557,0x255d,0x255c,0x255b,0x2510,
0x2514,0x2534,0x252c,0x251c,0x2500,0x253c,0x255e,0x255f,
0x255a,0x2554,0x2569,0x2566,0x2560,0x2550,0x256c,0x2567,
0x2568,0x2564,0x2565,0x2559,0x2558,0x2552,0x2553,0x256b,
0x256a,0x2518,0x250c,0x2588,0x2584,0x258c,0x2590,0x2580,
0x03b1,0x00df,0x0393,0x03c0,0x03a3,0x03c3,0x00b5,0x03c4,
0x03a6,0x0398,0x03a9,0x03b4,0x221e,0x03c6,0x03b5,0x2229,
0x2261,0x00b1,0x2265,0x2264,0x2320,0x2321,0x00f7,0x2248,
0x00b0,0x2219,0x00b7,0x221a,0x207f,0x00b2,0x25a0,0x00ff,
};
extern "C" HWND WINAPI GetConsoleWindow();
void HideTheCursor() {
    CONSOLE_CURSOR_INFO cciCursor;
    HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);

    if(GetConsoleCursorInfo(hStdOut, &cciCursor)) {
        cciCursor.bVisible = FALSE;
        SetConsoleCursorInfo(hStdOut, &cciCursor);
    }
}
void ShowTheCursor() {
    CONSOLE_CURSOR_INFO cciCursor;
    HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE);

    if(GetConsoleCursorInfo(hStdOut, &cciCursor)) {
        cciCursor.bVisible = TRUE;
        SetConsoleCursorInfo(hStdOut, &cciCursor);
    }
}
int main() {
    HWND  hwnd;
    HDC   hdc;
    HFONT hfont;
    wchar_t ws[256];
    unsigned char s[256];
    int i;


    system("color F0");
    system("cls");
    HideTheCursor();
    hwnd  = GetConsoleWindow();
    hdc   = GetDC(hwnd);
    hfont = CreateFont(16,  0, 0, 0, 0, 0, 0, 0, 0           , 0, 0, 0, 0, "Lucida Console");
    SelectObject(hdc,hfont);
    TextOutW(hdc,10,10,L"你好",2);
    for (i=0;i<256;i++) s[i]=i;
    for (i=0;i<256;i++) ws[i]=a2w[s[i]];
    TextOutW(hdc,10, 40,ws    ,32);
    TextOutW(hdc,10, 80,ws+ 32,32);
    TextOutW(hdc,10,120,ws+ 64,32);
    TextOutW(hdc,10,160,ws+ 96,32);
    TextOutW(hdc,10,200,ws+128,32);
    TextOutW(hdc,10,240,ws+160,32);
    TextOutW(hdc,10,280,ws+192,32);
    TextOutW(hdc,10,320,ws+224,32);
    DeleteObject(hfont);
    ReleaseDC(hwnd,hdc);
    getch();
    system("color 07");
    system("cls");
    ShowTheCursor();
    return 0;
}