error: ‘for’ loop initial declarations are only allowed in
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使用gcc,出现如下错误:
thread_join.c:7:5: error: ‘for’ loop initial declarations are only allowed in C99 mode
for (int i = 0; i < 2; ++i)
^
thread_join.c:7:5: note: use option -std=c99 or -std=gnu99 to compile your code
出错的代码如下:
这是因为使用gcc时,直接在for循环中初始化落变量,这是因为gcc基于c89标准,换成C99标准就可以在for循环内定义i变量了。
gcc thread_join.c -std=c99 -lpthread -o thread_join
0 0
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