如何删除Consule中已经显示的字符
#include <iostream>#include <stdlib.h>#include <stdio.h>#include <conio.h>#include <windows.h>#include <string>using namespace std;int main(){ int noInput=0; char c; string a; for (int i=0;i<1000;i++) { if (noInput>500) { cout<<endl<<"走神儿了吧~~"<<endl; break; } Sleep(10); if (kbhit()) { c=getch(); if (c=='\r') break; else if (c=='\b') { //【定位光标，不会做】 clreol();//编译出错，找不到标示符 a.pop_back(); noInput=0; i=0; } else { a.push_back(c); cout<<c; noInput=0; i=0; } } else { noInput++; } } cout<<endl<<a<<endl; system("pause");}#include <windows.h>#include <stdio.h>void ConPrint(char *CharBuffer, int len);void ConPrintAt(int x, int y, char *CharBuffer, int len);void gotoXY(int x, int y);void ClearConsole(void);void ClearConsoleToColors(int ForgC, int BackC);void SetColorAndBackground(int ForgC, int BackC);void SetColor(int ForgC);void HideTheCursor(void);void ShowTheCursor(void);int main(int argc, char* argv[]){ HideTheCursor(); ClearConsoleToColors(15, 1); ClearConsole(); gotoXY(1, 1); SetColor(14); printf("This is a test...\n"); Sleep(5000); ShowTheCursor(); SetColorAndBackground(15, 12); ConPrint("This is also a test...\n", 23); SetColorAndBackground(1, 7); ConPrintAt(22, 15, "This is also a test...\n", 23); gotoXY(0, 24); SetColorAndBackground(7, 1); return 0;}//This will clear the console while setting the forground and//background colors.void ClearConsoleToColors(int ForgC, int BackC){ WORD wColor = ((BackC & 0x0F) << 4) + (ForgC & 0x0F); //Get the handle to the current output buffer... HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE); //This is used to reset the carat/cursor to the top left. COORD coord = {0, 0}; //A return value... indicating how many chars were written //not used but we need to capture this since it will be //written anyway (passing NULL causes an access violation). DWORD count; //This is a structure containing all of the console info // it is used here to find the size of the console. CONSOLE_SCREEN_BUFFER_INFO csbi; //Here we will set the current color SetConsoleTextAttribute(hStdOut, wColor); if(GetConsoleScreenBufferInfo(hStdOut, &csbi)) { //This fills the buffer with a given character (in this case 32=space). FillConsoleOutputCharacter(hStdOut, (TCHAR) 32, csbi.dwSize.X * csbi.dwSize.Y, coord, &count); FillConsoleOutputAttribute(hStdOut, csbi.wAttributes, csbi.dwSize.X * csbi.dwSize.Y, coord, &count); //This will set our cursor position for the next print statement. SetConsoleCursorPosition(hStdOut, coord); }}//This will clear the console.void ClearConsole(){ //Get the handle to the current output buffer... HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE); //This is used to reset the carat/cursor to the top left. COORD coord = {0, 0}; //A return value... indicating how many chars were written // not used but we need to capture this since it will be // written anyway (passing NULL causes an access violation). DWORD count; //This is a structure containing all of the console info // it is used here to find the size of the console. CONSOLE_SCREEN_BUFFER_INFO csbi; //Here we will set the current color if(GetConsoleScreenBufferInfo(hStdOut, &csbi)) { //This fills the buffer with a given character (in this case 32=space). FillConsoleOutputCharacter(hStdOut, (TCHAR) 32, csbi.dwSize.X * csbi.dwSize.Y, coord, &count); FillConsoleOutputAttribute(hStdOut, csbi.wAttributes, csbi.dwSize.X * csbi.dwSize.Y, coord, &count); //This will set our cursor position for the next print statement. SetConsoleCursorPosition(hStdOut, coord); }}//This will set the position of the cursorvoid gotoXY(int x, int y){ //Initialize the coordinates COORD coord = {x, y}; //Set the position SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE), coord);}//This will set the forground color for printing in a console window.void SetColor(int ForgC){ WORD wColor; //We will need this handle to get the current background attribute HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE); CONSOLE_SCREEN_BUFFER_INFO csbi; //We use csbi for the wAttributes word. if(GetConsoleScreenBufferInfo(hStdOut, &csbi)) { //Mask out all but the background attribute, and add in the forgournd color wColor = (csbi.wAttributes & 0xF0) + (ForgC & 0x0F); SetConsoleTextAttribute(hStdOut, wColor); }}//This will set the forground and background color for printing in a console window.void SetColorAndBackground(int ForgC, int BackC){ WORD wColor = ((BackC & 0x0F) << 4) + (ForgC & 0x0F);; SetConsoleTextAttribute(GetStdHandle(STD_OUTPUT_HANDLE), wColor);}//Direct console outputvoid ConPrint(char *CharBuffer, int len){ DWORD count; WriteConsole(GetStdHandle(STD_OUTPUT_HANDLE), CharBuffer, len, &count, NULL);}//Direct Console output at a particular coordinate.void ConPrintAt(int x, int y, char *CharBuffer, int len){ DWORD count; COORD coord = {x, y}; HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE); SetConsoleCursorPosition(hStdOut, coord); WriteConsole(hStdOut, CharBuffer, len, &count, NULL);}//Hides the console cursorvoid HideTheCursor(){ CONSOLE_CURSOR_INFO cciCursor; HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE); if(GetConsoleCursorInfo(hStdOut, &cciCursor)) { cciCursor.bVisible = FALSE; SetConsoleCursorInfo(hStdOut, &cciCursor); }}//Shows the console cursorvoid ShowTheCursor(){ CONSOLE_CURSOR_INFO cciCursor; HANDLE hStdOut = GetStdHandle(STD_OUTPUT_HANDLE); if(GetConsoleCursorInfo(hStdOut, &cciCursor)) { cciCursor.bVisible = TRUE; SetConsoleCursorInfo(hStdOut, &cciCursor); }}