为什么printf不在这里打印？

Question

我知道执行后的printf返回一些非零值{编辑:返回否.charecters}现在在这个例子中我使用了多个printf和现在.

 /* As far as i was cocerned Precedence of && is more than ||,
  *and these logical operators check from left to right  
  *So compiler should come to hello and print "hello" then "nice to see you" then "hie" 
  *as all are true it should print "hola" 
  *but i wonder, why here the output is only "hie" and "hola"?
  */  

 #include<stdio.h>
 main()
 {
    if(printf("hie")|| printf("hello")&& printf("nice to see you"))
    printf("\thola\n");
 }

Answer 1

成功时printf()返回写入的字符总数.因此printf("hie")返回3,这足以对逻辑"或"条件进行惰性评估.

printf("hie")|| printf("hello") 
// --> 3 || whatever --> 
// true || whatever --> 
// true

因此,根本不需要进行评估printf("hello").