实现一个简单的printf，只需要支持%c，%d，就可以了。用C语言。
小弟的c语言学的基本上忘记了。希望高手能解释下个别语句~

晕~二楼这个。。。能不能专业点儿

对你们真的很无语~
进过我认真的研究，自己编写出啦了~
放出代码，大家看看：

void myprintf(char* fmt, ...)
{
    char c;
    int n=6;
    int nch[100];
    int i=0;
    int cs;
    int s;
    int r;

    do
    {       c=*fmt;

        if (c != '%')
        {
        putch(c);
        }
        else
        {       switch(*++fmt)
            {
                case 'c':
                    putch(*(int *)(_BP+n));
                    n=n+2;
                    break;

                case 'd':
                    cs=*(int *)(_BP+n);
                    if(cs>0)
                    {
                        do
                        {
                        r=cs%10;
                        cs=cs/10;
                        nch[i]=r;
                        i++;
                        }while(cs!=0);

                        do
                        {
                        i--;
                        putch(nch[i]+48);
                        }while(i!=0);
                    }else if(cs<0)
                        {
                            cs=abs(cs);
                            do
                            {
                            r=cs%10;
                            cs=cs/10;
                            nch[i]=r;
                            i++;
                            }while(cs!=0);

                            putch('-');

                            do
                            {
                            i--;
                            putch(nch[i]+48);
                            }while(i!=0);
                        }
                    else if(cs==0)
                        {
                        putch('0');
                        }
                    n=n+2;
                    break;

                default:
                    fmt--;
                    putch(*fmt);
                    break;
            }
        }
        fmt++;
    }while (*fmt != '\0');
}

void main()
{
    myprintf("showchar:%c,shownumber:%d %d %d %d,and other special char%qwer%%%%wefterfdg%fwer",65,0,32767,-32767,0);
}

这个代码只有-32768不能显示，估计是压栈指针没有指示到。有心劲儿的同学可以自己改改~不行的话可以好好交流！“千万别说什么问题没有水平。”说这话的人真没水平。。。。

[ 本帖最后由 sxzjw 于 2010-5-26 21:59 编辑 ]

楼上高手啊~图形界面我还没有涉及到。。。我是个小菜鸟~真的。。向楼上学习！