C++爱好者的自我修养（9）：void自定义函数

2024-03-22 02:02| 来源: 网络整理| 查看: 265

今天小编来分享一下void自定义函数

注意：void自定义函数无返回值

1、有输入值的void自定义函数

格式：

void 函数名(数据类型变量名){

语句;

}

例如：一个可以控制输出字符颜色的自定义函数

void Color (int a) { if (a == 0 || a == 14 || a == 20) { SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), FOREGROUND_INTENSITY|FOREGROUND_RED|FOREGROUND_GREEN|FOREGROUND_BLUE); } else if (a == 1 || a == 12) { SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), FOREGROUND_INTENSITY|FOREGROUND_GREEN|FOREGROUND_BLUE); } else if (a == 2) { SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), FOREGROUND_INTENSITY|FOREGROUND_GREEN); } else if (a == 3) { SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), FOREGROUND_INTENSITY|FOREGROUND_RED|FOREGROUND_BLUE); } else if (a == 4 || a == 11) { SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), FOREGROUND_INTENSITY|FOREGROUND_RED); } else if (a == 5 || a == 13) { SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), FOREGROUND_INTENSITY|FOREGROUND_RED|FOREGROUND_GREEN); } else if (a == 7) { SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), FOREGROUND_GREEN|FOREGROUND_BLUE); } else if (a == 15) { SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), FOREGROUND_INTENSITY); } else if (a == 16) { SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), FOREGROUND_GREEN); } else if (a == 17) { SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), FOREGROUND_RED); } else if (a == 8) { SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), FOREGROUND_RED|FOREGROUND_GREEN|FOREGROUND_BLUE); } else if (a == 6) { SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), FOREGROUND_INTENSITY|FOREGROUND_BLUE); } else if (a == 9) { SetConsoleTextAttribute (GetStdHandle (STD_OUTPUT_HANDLE), FOREGROUND_INTENSITY|FOREGROUND_RED|BACKGROUND_RED|BACKGROUND_GREEN); } }

2、无输入值的自定义函数

格式：

void 函数名(void){

语句;

}

例如：

void Hallo_World(void){ cout

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