} {
}
break;
system(\break;
printf(\输入无效！背景和前景颜色相同！\\n\break;
system(\break;
system(\break;
system(\break;
system(\break;
system(\break;
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
break;
case 3:
printf(\前景颜色：0：黑、1：蓝、2：绿、3：湖蓝色、4：红、5：紫、6：scanf(\switch(j) { case 0:
system(\break;
system(\break;
system(\break;
printf(\输入无效！背景和前景颜色相同！\\n\
黄、7：白\
case 1:
case 2:
case 3:
} {
}
break;
system(\break;
system(\break;
system(\break;
system(\break;
case 4:
case 5:
case 6:
case 7:
break;
case 4:
printf(\前景颜色：0：黑、1：蓝、2：绿、3：湖蓝色、4：红、5：紫、6：scanf(\switch(j) { case 0:
system(\break;
system(\break;
system(\break;
system(\break;
printf(\输入无效！背景和前景颜色相同！\\n\break;
system(\break;
system(\
黄、7：白\
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
} { } {
}
break;
system(\break;
case 7:
break;
case 5:
printf(\前景颜色：0：黑、1：蓝、2：绿、3：湖蓝色、4：红、5：紫、6：scanf(\switch(j) { case 0: } break;
system(\break;
system(\break;
system(\break;
system(\break;
system(\break;
printf(\输入无效！背景和前景颜色相同！\\n\break;
system(\break;
system(\break;
黄、7：白\
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
case 6:
} {
printf(\前景颜色：0：黑、1：蓝、2：绿、3：湖蓝色、4：红、5：紫、6：scanf(\switch(j) { case 0: } break;
system(\break;
system(\break;
system(\break;
system(\break;
system(\break;
system(\break;
printf(\输入无效！背景和前景颜色相同！\\n\break;
system(\break;
黄、7：白\
case 1:
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
case 7:
printf(\前景颜色：0：黑、1：蓝、2：绿、3：湖蓝色、4：红、5：紫、6：scanf(\switch(j) { case 0:
system(\break;
黄、7：白\
}
}
case 1: } break;
system(\break;
system(\break;
system(\break;
system(\break;
system(\break;
system(\break;
printf(\输入无效！背景和前景颜色相同！\\n\break;
case 2:
case 3:
case 4:
case 5:
case 6:
case 7:
printf(\返回主菜单、1 重新设置界面颜色\\n\ getchar(); a=getchar(); getchar(); if(a=='0') { } }
printf(\输入错误！\\n\main(); look();
else if(a=='1') else
三、测试及调试（测试方案、存在的问题及解决方法）