Question

目前，每当我在Codeblocks上构建代码时，我都遇到了一些问题。

#include <sys/types.h>
#include <regex.h>
#include <stdio.h>

#define MAX_MATCHES 1 //The maximum number of matches allowed in a single string

void match(regex_t *pexp, char *sz) {
    regmatch_t matches[MAX_MATCHES]; //A list of the matches in the string (a list of 1)
    //Compare the string to the expression
    //regexec() returns 0 on match, otherwise REG_NOMATCH
    if (regexec(pexp, sz, MAX_MATCHES, matches, 0) == 0) {
        printf("\"%s\" matches characters %d - %d\n", sz, matches[0].rm_so, matches[0].rm_eo);
    } else {
        printf("\"%s\" does not match\n", sz);
    }
}

int main() {
    int rv;
    regex_t exp; //Our compiled expression
    //1. Compile our expression.
    //Our regex is "-?[0-9]+(\\.[0-9]+)?". I will explain this later.
    //REG_EXTENDED is so that we can use Extended regular expressions
    rv = regcomp(&exp, "-?[0-9]+(\\.[0-9]+)?", REG_EXTENDED);
    if (rv != 0) {
        printf("regcomp failed with %d\n", rv);
    }
    //2. Now run some tests on it
    match(&exp, "0");
    match(&exp, "0.");
    match(&exp, "0.0");
    match(&exp, "10.1");
    match(&exp, "-10.1");
    match(&exp, "a");
    match(&exp, "a.1");
    match(&exp, "0.a");
    match(&exp, "0.1a");
    match(&exp, "hello");
    //3. Free it
    regfree(&exp);
    return 0;
}

我总是在if (regexec(pexp, sz, MAX_MATCHES, matches, 0) == 0) {

这一行上收到错误

该错误是对＆＃39; _imp_regexec＆＃39;

的未定义引用

所以我想知道它是否是因为我没有设置链接器，或者我的include文件夹中的regex.h文件是问题还是其他东西。

我可以在其中下载包含regex.h的包含文件的特定位置

0 个答案: