C语言实现控制台背景闪烁

#include<stdio.h>
#include<windows.h>
#include<string.h>
int main(){
	int i;
	char color[]={'0','\0','1','\0','2','\0','3','\0','4','\0','5','\0','6','\0','7','\0','8','\0','9','\0','a','\0','b','\0','c','\0','d','\0','e','\0','f','\0'};
	while(1){
		for(i=0;i<15;i++){
			char str1[]="color ";
			char seven[]="7";
			char *str2=strcat(str1,color+i*2);
			char *color=strcat(str2,seven);
			system(color);
			Sleep(30);
		}
	}
	return 0;
}