Thread: Need help with 'C' Program (arrays)

Hey everyone,
I know this is going to end up being a really stupid mistake, but im taking a C class and Im stuck on my program, im trying to get this program to look like this:

Please enter the number of results per experiment: 3
Please enter the number of experiments: 2

Please enter result 1 for experiment 1: 1.0
Please enter result 2 for experiment 1: 2.0
Please enter result 3 for experiment 1: 3.0

Please enter result 1 for experiment 2: 4.0
Please enter result 2 for experiment 2: 5.0
Please enter result 3 for experiment 2: 6.0

Result 1 Result 2 Result 3 Exper. Average
--------------------------------- ------------
Exper. 1: 1.0000 2.0000 3.0000 2.0000
Exper. 2: 4.0000 5.0000 6.0000 5.0000


but my output at the bottom is coming out with numbers different than what they should be...(I.E. 1.85 for 1, 2.124 for 3).Any ideas what im doing wrong?


thanks
you all rock

Code:

#include <stdio.h> 



#define MAX_RESULTS 6 
#define MAX_EXPERS 10 


int 
main(void) 
{ 
int count = 0; 
int results; 
int experiments = 0; 
int excount = 0; 
int rescount = 0; 


float fresults[MAX_RESULTS][MAX_EXPERS]; 




count = 0; 


results = 1; 

while(results != 0) 
{ 

printf("Please enter the number of results per experiment (No More Than 6): "); 
printf("\t\t\t\t\t\t\t\tOr '0' to quit "); 
scanf("%d", &results); 

if(results > 0) 
{ 
printf("Please enter the number of experiments(No More than 10): "); 
scanf("%d", &experiments); 


if(results > MAX_RESULTS || experiments > MAX_EXPERS) 
{ 
printf("Please check to make sure your values aren't greater than the defined limits!\n\n\n"); 
} 

else 
{ 

for (excount = 0; excount < experiments; excount++) 
{ 

printf("\n"); 

for (rescount = 0; rescount < results; rescount++) 
{ 

printf("Please enter result %d for experiment %d: ", (rescount + 1), (excount +1)); 

scanf("%lf", &fresults[rescount][excount]); 



} 

} 
printf("\n\n"); 
} 


for(rescount = 0; rescount < results; rescount++) 
{ 
printf("Result %d\t", (rescount + 1)); 

} 
printf("Exper. Average"); 
printf("\n"); 
for(rescount = 0; rescount < results; rescount++) 

{ 
printf("--------- \t", (rescount + 1)); 

} 
printf("---------"); 
printf("\n"); 


} 
/* note to self: Add loop to output more than 1 row once you get this to work */ 
for(rescount = 0; rescount < results; rescount++) 
{ 
printf("%f\t", fresults[][0]); 

} 
printf("\n"); 
} 
return(0); 
}

OK, first, a couple of things to get you started:

Code:

/* note to self: Add loop to output more than 1 row once you get this to work */
for(rescount = 0; rescount < results; rescount++)
{
  printf("%f\t", fresults[][0]);
}

That part above should be changed to the following:

Code:

    for(rescount = 0; rescount < results; rescount++)
      printf("%f\t", fresults[rescount][0]);

You forgot the loop-counter index there, and now you can add the outer loop like you intended (in the comment).

Another thing, the line that reads:

Code:

printf("Please enter the number of results per experiment (No More Than 6): ");

should really say:

Code:

printf("Please enter the number of results per experiment (No More Than %d): ", MAX_RESULTS);

change this for maximum experiments as well.

Also, in this part of code, the part I put in bold doesn't do anything and is completely unnecessary:

Code:

for(rescount = 0; rescount < results; rescount++)
{
printf("Result %d\t", (rescount + 1));

Make some of these changes, and have a shot at the "/* note to self: Add loop to output more than 1 row once you get this to work */" part of the program.

Good luck, and if anything comes up, just ask