C语言实现滚动字幕

#include <StdAfx.h>




#include <stdio.h>


#include <time.h>


#include <conio.h>


#include <string.h>




#define TIME_INTERVAL (CLOCKS_PER_SEC / 50)




int main(int argc, char* argv[])




...{


int i, j;


long c;


char str[80] = "Hello world!";


int l = strlen(str);


char sleft[80];


char sright[80];


int scrwidth = 79;





while (1)




...{


for (i = 0; i <= scrwidth; i++)




...{


if (i <= scrwidth - l)




...{


c = clock();


for (j = 0; j < i; j++)




...{


printf(" ");


}


printf("%s ", str);


while (clock() - c <= TIME_INTERVAL)


;


}


else




...{


c = clock();


strcpy(sleft, str);


strcpy(sright, str + l - (i - (scrwidth - l)));


*(sleft + l - (i - (scrwidth - l))) = NULL;


for (j = 0; j < i; j++)




...{


printf(" ");


}


printf("%s ", sleft);


printf("%s ", sright);


while (clock() - c <= TIME_INTERVAL)


;


}


}


}





return 0;


}