Thread: Simple Conversion tool

Adak, I tried your bubble sort, and the problem persists.

I even tried a separate file, without the first, last, median, and choice of descending or ascending

here it is:

Code:

#include <stdlib.h>
#include <stdio.h>
#include <limits.h>

main(){
int i;
int count;
int InputNumbers[100];
int max;
int Temp;
char filename[256];

FILE *in_fd;
FILE *out_fd;
char outputname[256];
float next_number;

printf("Enter input file name:");

  scanf("%s",filename);





  /* open file and print error message and exit on failure */

 
  if ((in_fd = fopen(filename, "r")) == 0) {

    fprintf(stderr, "File: %s Not Found!\n",filename);

    exit(0);

    }

    
   /*Asks user to name the ouput file, storing it in "outputname"*/
   
   printf("Enter the name of your output file:");
   scanf("%s", outputname);
   
   /*Creates output file, and opens it for writing*/
   
   out_fd=fopen(outputname, "w");


  /* this while loop reads numbers from the file until it is empty. */
  /* It stores these numbers in "InputNumbers" as "count" increments */
  /* through the array */
 
  


  while(fscanf(in_fd,"%f\n",&next_number)!=EOF) 
  {

    	count++;
    	InputNumbers[count]=next_number;
    	
    }
    
   max=count;
  
   
   /*This is a bubble sort. The program increments through the array, */
   /*comparing each set of adjacent numbers. It swaps the numbers in  */
   /*order to satisfy the inequality*/
   
   	for (count=0;count < max-1;count++)
	{
   		for(i=count+1;i < max;i++)
   		{
   			if(InputNumbers[count] < InputNumbers[i])
 	 	 {
   			Temp=InputNumbers[count];
   			InputNumbers[count]=InputNumbers[i];
   			InputNumbers[i]=Temp;
   		}
   		}
   		
   		
		
	}
return (0);
	}

I still get a segmentation fault on it. If i can get it working on its own, then i should be able to put it into the larger code.

also, I got the converter working with this

Code:

#include <stdio.h>



main() {



  /* Declare main program variables. Use of float allows for decimal points. */


float number; 
char unit;
float m_km_ConvNum;
float km_m_ConvNum;
float M_ft_ConvNum;
float f_M_ConvNum;

/*Program asks the user to type the distance, including units, that they wish*/
/*to be converted*/

printf("Please enter the distance that you wish to convert (including units:(f)eet,(M)iles,(m)eters,(k)ilometers):\n");

/*Program reads the input from the user, sotring them in number and unit*/

scanf("%f %c\n",&number,&unit);

/*The following if statements direct the program to the correct operation, depending*/
/*on the value of unit*/

if(unit=='m'){


	m_km_ConvNum=number*.001;

	printf("%.3f Meters is equivalent to: %.3f Kilometers\n",number,m_km_ConvNum);

}


if(unit=='K'){

	km_m_ConvNum=number*1000;

	printf("%.3f Kilometers is equivalent to: %.3f Meters\n",number,km_m_ConvNum);

}

if(unit=='M'){

	M_ft_ConvNum=number*5280;

	printf("%.3f Miles is equivalent to: %.3f Feet\n",number,M_ft_ConvNum);

}

if(unit=='f'){

	f_M_ConvNum=number*.00018939;

	printf("%.3f Feet is equivalent to: %.3f Miles\n",number,f_M_ConvNum);

}

	return (0);	

}

I had to add "&" to unit, is this wrong?

I still, however, have to type end after putting in my distance. after that it works fine. any ideas?

got things working, if anyone needs to see any of the code just say so

thanks for everyones help

One problem with the posted code is that the variable count, was never initialized before being used.

Then max is assigned the value, after count is incremented, and max is used in the bubblesort as the upper subscript value.

You must have corrected this error, if it's working ok, now.