Import Iconv Library Into C++ Project To Convert Charset

If you are on linux os, you needn’t add library setting in CMakeLists.txt. The libray iconv files has been inside system path.

cmake_minimum_required(VERSION 3.5)

project(iconvTest LANGUAGES CXX)

set(CMAKE_CXX_STANDARD 11)
set(CMAKE_CXX_STANDARD_REQUIRED ON)

add_executable(iconvTest main.cpp )

target_link_libraries( ${PROJECT_NAME} ) # iconv)

main.cpp

#include <stdio.h>
#include <string.h>
#include <iconv.h>

int main()
{
    char *gbk_str = "GBK \xB5\xE7\xCA\xD3\xBB\xFA";
    char dest_str[100];
    char *out = dest_str;
    size_t inbytes = strlen(gbk_str);
    size_t outbytes = sizeof( dest_str );
    iconv_t conv = iconv_open("UTF-8", "GBK");

    if (conv == (iconv_t)-1) {
        perror("iconv_open");
        return 1;
    }

    if (iconv(conv, &gbk_str, &inbytes, &out, &outbytes) == (size_t)-1) {
        perror("iconv");
        return 1;
    }

    puts(dest_str);
    printf( "%d\n", strlen( dest_str ) );

    return 0;
}