将一个方法调用放在for循环中被认为是不好的做法？(Is putting a method call in a for loop considered bad practice?)

将一个方法调用放在for循环中被认为是不好的做法？(Is putting a method call in a for loop considered bad practice?)

以下是否会被视为不良编码实践？

for (row = 0; row < 4; row++, printf("\n")) { for (col = 0; col <= row; col++) { printf("*"); } }

Would the following be considered bad coding practice?

for (row = 0; row < 4; row++, printf("\n")) { for (col = 0; col <= row; col++) { printf("*"); } }

最满意答案

是的，这被认为是不好的做法。 我会引用广泛认可的权威，而不是基于我自己的主观意见做出回复（价值有限）：

MISRA-C：2004，规则13.5：

“for循环的三个语句只涉及循环控制。” / - /

“第三个表达式：循环计数器（i）的递增或递减。”

MISRA-C也完全禁止使用逗号运算符：它被认为既多余又危险。

Yes, this is considered as bad practice. Rather than making a reply (of limited value) based on my own subjective opinions, I'll cite a widely-recognized authority:

MISRA-C:2004, rule 13.5:

"The three statements of a for loop shall be concerned only with loop control." /--/

"Third expression: Increment or decrement of the loop counter (i)."

MISRA-C also bans the use of the comma operator entirely: it is considered both superfluous and dangerous.