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基本条件 C. 综合框架发言核对表
原标题:Basic Conditional Checking for IF statements in C

Can someone please explain what really goes on in this code ? If I put the AND statement, the message wont show if values are less than 0 or greater than 10 ... I think I must use 1 0 logic to work this out right ? I just need someone to briefly explain it please.

#include<stdio.h>
main(){

  puts("enter number");
  scanf("%d",num);
  if(num<0 || num >10)
     puts("yay");
}

The How is that FI statement different when and is made:

#include<stdio.h>
main(){

  puts("enter number");
  scanf("%d",num);
  if(num<0 && num >10)
     puts("yay");
}

感谢!

最佳回答

依据的是Bolulean逻辑:

true || true -> true
true || false -> true
false || true -> true
false || false -> false

true && true -> true
true && false -> false
false && true -> false
false && false -> false

如果一方是真实的,另一方是假的,则通知他们如何区别。

在您的考验中:

if(num<0 && num >10)

无法将编号改为< 0,同时改为> 10。 因此,您将评价<代码>true &&不实(关于负数)、<代码>false &&不实(涉及0至10个包容性)或<代码>false &和 在上述所有情况下,风气逻辑说答案是false

问题回答

Boo 逻辑。

如果符合纽约的条件,你可以使用<>。 如果符合所有条件,如果你使用并使用;和(AND)的话,发言是真实的。 在你的第二个例子中,如果该数字低于0和10。 显然没有这样的数目。

(1) 我认为,你会放弃一些char果:

scanf("%d",&num);

2) 第一个例子是,如果数字为LESS THAN 0,则会说“y”。 缩略语................ 10

第二例永远不会说“水”b/c号必须是LESS THAN 0。 缩略语





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