如何获取在C中运行的用于输入和输出文件的命令行参数

我正在尝试在CMD开发人员提示符下运行应用程序，它应该具有使用命令行参数的输入文件和输出文件（我不理解，或者无法理解）。但是，当我这样做时，它正在运行并结束，但是没有任何内容被打印到输出文件中。

以下是我的代码，其中已删除了不相关的代码。我不知道我在代码或cmd行开发人员提示中做错了什么。

该应用程序被调用printlines.exe，我的命令如下所示：

printlines.exe -i file.java -o output.txt

任何建议将不胜感激。

#include <stdio.h>
#include <string.h>
#include <stdbool.h>
#define LINE 1000

void countLines(int *emptyLines, int *totalLines, int *totalComments, char *fileName, FILE *readFile)
{
    char line[LINE]; // set array to store input file data
    //set variables
    readFile = fopen(fileName, "r");
    int lines = 0;
    int comments = 0;
    int empty = 0;

    while (fgets(line, LINE, readFile) != NULL) //while loop that reads in input file line by line
    {
        /*counts lines in input file works when not using 
            command line arguments redacted to shorten */
    }

    fclose(readFile);

    *emptyLines = empty;
    *totalLines = lines;
    *totalComments = comments;
}

int main(int argc, char *argv[])
{
    FILE *inputFile;
    FILE *outputFile;
    char *outputName;
    char *inputName;

    inputName = argv[1];
    outputName = argv[2];

    inputFile = fopen(inputName, "r");
    outputFile = fopen(outputName, "w");

    int emptyLines, totalLines, totalComments;
    countLines(&emptyLines, &totalLines, &totalComments, inputName, inputFile);
    int character;
    bool aComment = false;

    while ((character = fgetc(inputFile)) != EOF)
    {
        /* code that writes info from input to output, works 
              when not using command line arguments redacted to shorten*/
    }

    //close files
    fclose(inputFile);
    fclose(outputFile);

    printf("There are %d total lines, %d lines of code and %d comments in the file\n", totalLines, emptyLines, totalComments);
    return 0;
}