finding the max/min/average

[niponki]

Hi,

Need some help on this one. I am writing a program using structures and arrays for students grades. I am getting the input from a file and I am suppossed to print out the data, then print out the max score, min score, and average score of each quiz taken. Here is the code I have made so far.

#include <stdio.h>

/* Global Declarations */

typedef struct
	{
	char nameFirst[20];
	char nameLast[20];
	int id;
	int quiz[4];
	int exam;
	} STUDENT;

int main (void)
{
	
	STUDENT stuAry[50];
	STUDENT highest;
	STUDENT lowest;
	STUDENT average;
	FILE *fpData;
	int i = 0;
	

	if ((fpData = fopen("lab5.txt", "r")) == NULL) // <-- OPENS lab5.txt FILE
	{
	printf("\a*ERROR OPENING lab5.txt\n");
	return (100);
	} /* IF OPEN */
	
	printf("--------------------------------------------------------------------\n");
	printf("\t\t\t\t DATA\n");
	printf("--------------------------------------------------------------------\n");
	printf("\nNAME\t\t\tID\tQUIZ1\tQUIZ2\tQUIZ3\tQUIZ4\tEXAM\n\n");

	while ((fscanf (fpData, "%s%s%d%d%d%d%d%d", &stuAry[i].nameFirst, &stuAry[i].nameLast, &stuAry[i].id, &stuAry[i].quiz[0], &stuAry[i].quiz[1], &stuAry[i].quiz[2], &stuAry[i].quiz[3], &stuAry[i].exam))>0){

			
			printf("%-10s ", stuAry[i].nameFirst);
			printf("%-10s", stuAry[i].nameLast);
			printf("\t%d\t", stuAry[i].id);
			printf("%d\t", stuAry[i].quiz[0]);
			printf("%d\t", stuAry[i].quiz[1]);
			printf("%d\t", stuAry[i].quiz[2]);
			printf("%d\t", stuAry[i].quiz[3]);
			printf("%d\n", stuAry[i].exam);

			i++;
	}
		

	printf("\n--------------------------------------------------------------------\n");
	printf("\t\t\t\t STATISTICS\n");
	printf("--------------------------------------------------------------------\n");

				
	
	if (fclose(fpData == EOF) // <--CLOSES lab5.txt FILE
	{
	printf("\aERROR OPENING lab5.txt\n");
	return (102);
	}

	return 0;
}

Any help to start me off in the right direction would be great. Thanks in advance.

[Dave_Sinkula]

Crank the warning/error level your compiler emits to the max.
Fix the warnings/errors.
Post specific warnings/errors that you don't understand and can't fix.
[edit]Post a sample of the input file (we don't read minds).

[niponki]

whoa.. took me almost all night, but I think.. well, I guess I know that i got it since it works. Thanks for the help. Here is the last part of the code that I came up with.

printf("\n--------------------------------------------------------------------\n");
	printf("\t\t\t\t STATISTICS\n");
	printf("--------------------------------------------------------------------\n");
	printf("Quiz\tLow\tHigh\tAvg\n");
	
	
	for (j = 0; j < 4; j++)
	{
		printStat(stuAry, i, j);
	}	 				
	
	if (fclose(fpData) == EOF) // <--CLOSES lab5.txt FILE
	{
	printf("\aERROR OPENING lab5.txt\n");
	return (102);
	}

	return 0;
}

void printStat(STUDENT a[], int tot, int qnum)
{
	int low, high;
	float ave = 0;

	int k;

	low = a[0].quiz[qnum];
	high = low;
	
	for(k = 1; k < tot; k++)
	{
		if (low > a[k].quiz[qnum])
			low = a[k].quiz[qnum];

		if (high < a[k].quiz[qnum])
			high = a[k].quiz[qnum];
	
		ave += a[k].quiz[qnum];
	}

	ave = ave/tot;
		
	printf("Quiz %d: %d\t%d\t%.2f\n", qnum, low, high,ave);	
	return;
}