c - fprintf 在与批处理文件重定向一起使用时打印奇怪的字符

Question

我有一个批处理文件如下

wmic cpu get CurrentClockSpeed > file.txt
program

程序是下面命令的可执行

gcc -o program initial_scan.c -lpsapi

下面是initial_scan.c文件

#include <stdio.h>
#include <windows.h>
#include <psapi.h>

#define DIV 1048576
#define WIDTH 7

int main(){


     MEMORYSTATUSEX statex;
     statex.dwLength = sizeof (statex);
     GlobalMemoryStatusEx (&statex);

     PERFORMANCE_INFORMATION statex2;
     statex2.cb=sizeof(statex2);
     GetPerformanceInfo(&statex2,statex2.cb);


     FILE *f=fopen("file.txt","a");
     if(f==NULL){
        printf("error opening the file");
        exit(1);
     }


     fprintf(f,"There is  %*ld percent of memory in use.\n",WIDTH, statex.dwMemoryLoad);
     fprintf(f,"There are %*I64d total MB of physical memory.\n",WIDTH, statex.ullTotalPhys/DIV);
     fprintf(f,"There are %*I64d free  MB of physical memory.\n",WIDTH, statex.ullAvailPhys/DIV);

     fprintf(f,"There is %*d processes currently in the system. \n",WIDTH,statex2.ProcessCount);
     fprintf(f,"There is %*d threads currently in the system. \n",WIDTH,statex2.ThreadCount);

     return 0;


}

当我运行批处理文件时，输出如下

CurrentClockSpeed  
3101               
桔牥⁥獩†††㈠‵数捲湥⁴景洠浥牯⁹湩甠敳മ吊敨敲愠敲††〸㈷琠瑯污䴠⁂景瀠票楳慣敭潭祲മ吊敨敲愠敲††〶〲映敲⁥䴠⁂景瀠票楳慣敭潭祲മ吊敨敲椠⁳††〱‱牰捯獥敳⁳畣牲湥汴⁹湩琠敨猠獹整⹭ഠ吊敨敲椠⁳†ㄠ㘳″桴敲摡⁳畣牲湥汴⁹湩琠敨猠獹整⹭ഠ

当我在没有 wmic 命令的情况下编译并运行 initial_scan.c 文件时，我得到了我期望从 initial_scan.c 文件获得的正确输出。批处理文件中的问题是什么？

Answer 1

您正在使用 ANSI 编码打开/写入文件，但 wmic 输出 UTF-16，这是您需要采取的修复措施:

将此添加到您的文件开头:

FILE *f = fopen("file.txt", "a, ccs=UTF-16LE");

然后像这样替换你的fprintf:

fwprintf(f,L"...\n", ...);