Difference between revisions of "Statistical Algorithms Importer: Linux-compiled Project FAQ"

//============================================================================
// Name        : BasicStatistic.cpp
// Author      : Giancarlo Panichi
// Version     :
// Copyright   : GNU GENERAL PUBLIC LICENSE. Version 3.0
// Description : BasicStatistic in C++, Ansi-style
//============================================================================
 
#include <iostream>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
using namespace std;
 
int main(int argc, char **argv) {
	printf("BasicStatistic");
	printf("Operator: %s\n",argv[1]);
	printf("Maximum number of items considered: %s\n",argv[2]);
	printf("Input file: %s\n",argv[3]);
 
	FILE * finput;
	char * line = NULL;
	size_t len = 0;
	ssize_t read;
 
	finput = fopen(argv[3], "r");
	if (finput == NULL){
		printf("No input file found: %s\n", argv[3]);
		return -1;
	}
 
	int limit=atoi(argv[2]);
	int i=0;
	int value=0;
	int result=0;
 
	while (((read = getline(&line, &len, finput)) != -1) && (i<limit||limit==-1)) {
		printf("Retrieved line of length %zu and value: %s", read,line);
		value=atoi(line);
		if(i==0){
			result=value;
		} else {
			if (strcmp(argv[1], "max") == 0)
			{
				if(value>result){
					result=value;
				}
			} else {
				if (strcmp(argv[1], "min") == 0)
				{
					if(value<result){
						result=value;
					}
				} else {
					if (strcmp(argv[1], "average") == 0)
					{
						result=(result+value);
					} else {
						break;
					}
				}
			}
		}
 
		i++;
	}
 
        if (strcmp(argv[1], "average") == 0)
	{
          result=result/i; 
        }
 
 
	fclose(finput);
	if (line){
		free(line);
	}
 
	//Write result
	FILE *foutput = fopen("output.txt", "w");
	if (foutput == NULL)
	{
		printf("Error opening file!\n");
		return -1;
	}
 
	fprintf(foutput, "BasicStatistic Result: \n");
	fprintf(foutput, "%d\n", result);
	fclose(foutput);
 
	return 0;
}