Thread: Extreme Newbie...

Ok, I am very new to C programming. I have tried to figure this little peice out for like 6 hours now. I just don't quite understand the syntax for user defined functions.

I think I have the code within the functions correct however I just can't get it to output. But I can't be for certain, however, I think my sorting function is correct since I got it from a book.

A nudge in the right direction or a little advice would be great!

My code:

Code:

// F to C Conversion and Sorting

#include <stdio.h>
#include <math.h>
#include <stdlib.h>
#define n 24

int main()
{
	double f_to_c(double f_temp);
	double temps[n];
	double abe(int num_temps, double temps[]);
	double average(int num_temps);
	int num_temps;
	int get_temps(int num_temps, double temps[]);
	void temp_sort(double temps[],int num_temps);
	double temp_output(double avg, double high, double low, int above,
		double temps[], int below, int equal, int more100, int more32,
		int less32, int num_temps);
	double avg, high, low;
	int above, below, equal, more100, more32, less32;

	get_temps(num_temps,temps[n]);
        temp_sort(temps[n],num_temps);
	abe(num_temps,temps[n]);
       average(num_temps);
       temp_output(avg,high,low,above,temps[n],below,equal,more100
                           ,more32,less32,num_temps);

	return 0;
}

// Get temperatues
int get_temps(int num_temps, double temps[])
{
	int i;

	printf("How many temperatures are you going to enter:");
	scanf("%i",&num_temps);

	for (i=0;i<=num_temps-1;i++) {

		printf("Enter a temperature (-150 to 150):");
		scanf("%lf",&temps[i]);

		if (temps[i] > 150 || temps[i] < -150) {

			printf("Invalid range, try again (-150 to 150):");
			i--;
		}
	}
	return num_temps;
}

// Convert C to F
double f_to_c(double f_temp)
{
	double cel;

	cel = ((double)f_temp - 32) * 5 / 9;

	return cel;

}

// Get average
double average(int num_temps)
{
	int i;
	double total=0;
	double temps[24];
	double avg;

	for (i=0;i<=num_temps-1;i++){

		total = total + temps[i];

	}

	avg = total / num_temps;

	return avg;
}

// Above, below, equal
int abe (int num_temps, double temps[])
{
	double avg;

	int i,above=0,below=0,equal=0;

	for (i=0;i<=num_temps-1;i++) {

		if (temps[i] > avg) {
			above++;
		} else if (temps[i] < avg) {
			below++;
		} else {
			equal++;
		}
	}
	return above,below,equal;
}

// Ranges
double temp_ranges(int num_temps)
{

	int i,more100,less32,more32;

	double high,low,temps[24];

	for (i=0;i<=num_temps-1;i++) {

		if(temps[i] < low) {	
			low = temps[i];
		}
		if(temps[i] > high) {
			high = temps[i];
		}
		if(temps[i] >= 100) {
			more100++;
		}
		if(temps[i] <= 32) {
			less32++;
		}
		if(temps[i] > 32 && temps[i] < 100) {
			more32++;
		}
	}
	return high,low,more100,less32,more32;
}

// Sort Array

void temp_sort(double temps[],int num_temps)
{
	int k,j,m;
	double hold;
	m = k;

	for (k=0;k<=num_temps;k++) {

		if(temps[j] < temps[m])
			m = j;
		hold = temps[m];
		temps[m] = temps[k];
		temps[k] = hold;
	}
	return;
}

// Display temperatures

double temp_output(double avg, double high, double low, int above,
				   double temps[], int below, int equal, int more100,
				   int more32, int less32, int num_temps)
{

	int i;

	printf("                   Fahr:     Cels:\n");

	for(i=0;i<=num_temps;i++) {

		printf("                   %.1lf     ",temps[i]);

		i++;

		printf("%lf\n",temps[i]);
	}

	printf("                ---------------------\n");
	printf("Average:            %.1lf     %lf\n\n",avg,f_to_c(avg));
	printf("Low:                %.1lf     %lf\n\n",low,f_to_c(low));
	printf("High:               %.1lf     %lf\n\n",high,f_to_c(high));
	printf("Above Average:      %i\n\n",above);
	printf("Below Average:      %i\n\n",below);
	printf("Equal to Average:   %i\n\n",equal);
	printf("100 F and Above:    %i\n\n",more100);
	printf("> 32 F and < 100 F: %i\n\n",more32);
	printf("32 F and Below:     %i\n\n",less32);
}

Sorry for not just posting code snippets, but at this point I'm not really sure exactly what is right and what is wrong.

Ok, thanks. I switched above,below,average, ect... to be entered into an additional array. That all works now.

However, the sorting does not work. That is the only peice I'm now missing.