This is C programming. Please help me understand this code: The more detail, the better. Thank you so much:

#include

#include

#include

#include "io.h"

#include "stats.h"

#include "utils.h"

#include "common.h"

int main(int argc, char* argv[])

{

int size = 0;

char **files_list = (char **) malloc (sizeof (char*) * 100);

//FILE is the structure's name, fp is declared as FILE pointer type

FILE *fp;

char *fileName;

int outputFile = 0;

//get_reg_files_list2(argv[1], &files_list, &size);

//printf("There are %d regular files in %s ", size, argv[1]);

//print_strings(stdout,files_list, size);

int num = 1;

int count = 0;

char str_delim = ',', ffname[256];

while ( num <= argc - 1 )

{

if (! strcmp(argv[num], "-o" ))

{

outputFile = 1;

fileName = argv[num+1];

fp = fopen(fileName, "a");

num = num + 1;

}

else

{

files_list[count] = (char *) malloc (sizeof (char) * 15);

strcpy(files_list[count], argv[num]);

count++;

}

num++;

}

num = 0;

//snprintf(ffname, sizeof(ffname)-1, "%s%s", argv[1], files_list[1]);

while ( num < count ) // argc - totla number of arguments including the executable name.

{

//ffname will be ../../data/stocks/argv[num]

// Will change for each iteration of the loop.

snprintf(ffname, sizeof(ffname) -1, "../../data/stocks/%s", files_list[num]); // argv[num] - argument.

Corporation *corp = (Corporation *)malloc(sizeof(Corporation));

get_stock_values(ffname, &(corp->data), &(corp->date), str_delim, &corp->data_rows, &corp->data_cols);

//get_stock_values(ffname, &(corp->summary_quote), &(corp->date), str_delim, &corp->data_rows, &corp->data_cols);

corp->date_length = corp->data_cols;

printf("File %s has %d rows and %d cols of data ", ffname, corp->data_rows, corp->data_cols);

// these are fake values

strcpy(corp->name, "Cecilia");

strcpy(corp->ticker, "abc");

strcpy(corp->industry, "computers");

strcpy(corp->sector, "electronics");

corp->stats = (Stats *) malloc(corp->data_rows*sizeof(Stats));

get_all_stats(corp->stats, corp->data, corp->data_rows, corp->data_cols);

print_stats_table(stdout, corp);

if ( outputFile )

{

print_stats(fp, corp->stats);

}

num++;

}

fclose(fp);

return EXIT_SUCCESS;

}