小编Jer*_*emy的帖子

如何使switch-case语句不区分大小写？说我做了这样的事情:

#include <stdio.h>

char choice;
int main ()
{
char choice;
printf("Will you choose A,B, or C?\n>");
scanf(" %c", &choice);

switch(choice)
{
    case 'A': 
         printf("The First Letter of the Alphabet");
         break;
    case 'B':
         printf("The Second Letter of the Alphabet");
         break;
    case 'C':
         printf("The Third Letter of the Alphabet");
         break;
}
}

它只会回应大写字母.如何让它回复小写字母？

我正在使用ncurses进行打字游戏.字母从屏幕上掉下来,您必须在它们到达底部之前键入它们.除了一个问题外,它工作得很好.清除窗口(使用clear())会使输出闪烁.我在循环的开头放了clear(),在最后放了wrefresh().它不应该等待直到wrefresh显示任何东西,因此不闪烁？

#include <iostream>
#include <string>
#include <cstdlib>
#include <ctime>
#include <curses.h>
#include <fstream>

using namespace std;

int main(){

  initscr();
  cbreak();
  noecho();
  keypad(stdscr, TRUE);
  nodelay(stdscr, TRUE);

  srand(time(NULL));

  //input character integer (ASCII)
  int ch = 1;
  //int to store the last time the character positions were updated
  int lastupdate = time(NULL);

  //x,y,char arrays for falling characters and initialization
  int chars[10], x[10], y[10];
  for(int i = 0; i < 10; i++){
    chars[i] = rand()%25 + 97;
    x[i] = rand()%30;
    y[i] = 0;
    //y[i] …