Question

我正在使用一些枚举类型实例化一个对象，并尝试根据这些枚举类型设置一些字符串成员。但是，当我调试并逐步执行时，用于设置字符串的开关每次都会命中，并且每个字符串都设置为每个枚举类型的最后一种情况。

enum Number {
one,
two,
three
};

enum Color {
    purple,
    red,
    green
};

enum Shading {
    solid,
    striped,
    outlined
};

enum Shape {
    oval,
    squiggle,
    diamond
};

Card::Card(Number num, Color colour, Shading shade, Shape shaper) {
number_ = num;
color_ = colour;
shading_ = shade;
shape_ = shaper;
setStrings();
}

void Card::setStrings() {
switch (number_) {
case one:
    number_string = "one";
case two:
    number_string = "two";
case three:
    number_string = "three";
}
switch(color_) {
case purple:
    color_string = "purple";
case red:
    color_string = "red";
case green:
    color_string = "green";
}
switch (shading_) {
case solid:
    shading_string = "solid";
case striped:
    shading_string = "striped";
case outlined:
    shading_string = "outlined";
}
switch (shape_) {
case oval:
    shape_string = "oval";
case squiggle:
    shape_string = "squiggle";
case diamond:
    shape_string = "diamond";
}

}

我使用重载构造函数实例化的每张卡都有number_string =＆＃34;三个＆＃34;，color_string =＆＃34;绿色＆＃34;，shading_string =＆＃34;概述＆＃34;和shape_string =＆＃ 34;金刚石＆＃34 ;.

Answer 1

你需要对switch语句使用break＆＃39;案例条款，否则它是一个堕落。以下是您的示例和详细信息。 https://10hash.com/c/cf/#idm45440468325552

#include <stdio.h>

int main()
{
  int i  = 65;

  switch(i)
  {
    case 'A':
      printf("Value of i is 'A'.\n");
      break;
    case 'B':
      printf("Value of i is 'B'.\n");
      break;
    default:
      break;
  }

  return 0;
}

Answer 2

您的开关箱不正确。您需要在每个案例之后为您的解决方案设置一个break，否则它会在每个案例中完成，直到它完成，并且当它遇到您想要的案例时不会中断。

C ++枚举到字符串切换不起作用

2 个答案: