可以只清除控制台中的一行文本吗
system("cls");清除了所有
有没只清除一行的？
或是有没统计一行有多少个字符的函数，之后我输出几个\b？？
[解决办法]
很高兴回答你的问题！
对于这个问题，之前也我遇到过的，如果是使用VC++开发工具的话，是没有现成的函数的；而使用C++ Builder是有现成的函数的；这个是前提！
但是，如果使用VC++开发，也是可以做到清除当前行的内容，即使你在当前行之前已经有多行的内容输出；办法如下：
使用如下函数，定位当前行，将输出光标定位到当前行的开始处：
SetConsoleCursorPosition(GetStdHandle(STD_OUTPUT_HANDLE),pos);
然后在当前行输出空格，就能搞定了，然后再把光标定位到当前行的开始处。
希望我的回答对你有用！
如果还有什么问题，可加QQ：535064959
[解决办法]
#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); }}