在C INT转换为字符串 [英] Converting int to string in c

问题描述

我现在用的是 itoa（）功能转换的 INT 到字符串但它给了一个错误

I am using the itoa() function to convert an int into string but it is giving an error

undefined reference to `itoa'
collect2: ld returned 1 exit status

有人能告诉我原因吗？
有没有执行此转换一些其他的方式？

Can someone tell me the reason? Is there some other way to perform this conversion?

推荐答案

使用的snprintf ，它更便于携带超过 itoa 。

Use snprintf, it is more portable than itoa.

itoa不是标准C的一部分，也不是标准的C ++ 的一部分;但是，大量的编译器和相关的库的支持。

itoa is not part of standard C, nor is it part of standard C++; but, a lot of compilers and associated libraries support it.

的sprintf

char* buffer = ... allocate a buffer ...
int value = 4564;
sprintf(buffer, "%d", value);

的snprintf

char buffer[10];
int value = 234452;
snprintf(buffer, 10, "%d", value);

这两个函数类似于 fprintf中，但输出将被写入到一个数组，而不是流。的sprintf 和的snprintf 是的snprintf 保障之间的的差异不缓冲器写入最多可以存储在缓冲区中的字符的最大数溢出

Both functions are similar to fprintf, but output is written into an array rather than to a stream. The difference between sprintf and snprintf is that snprintf guarantees no buffer overrun by writing up to a maximum number of characters that can be stored in the buffer.

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