no ressult after compile and run?

[Gola]

Hi everyone,
im new here and ive got this code. No error message but i cant get my ressult after compile and run. System pause etc just show the message Syntax: programfile inputfile at the end.
What i need to do so i can wright in the console year and average exam notes?
thx for any help and sry for my english


[tag]

#include <stdio.h> #include <conio.h> 
struct foitrec { 
char fname[15]; 
char lname[20]; 
int year; 
char exam; 
int snote; 
}; 


void main(int argc, char *argv[]) { 
    
FILE *fptr; 
struct foitrec ftt; 
float aver; 
int count; 
if(argc==2) { 
if(fptr=fopen(argv[1],"r")) { 
aver=0.0; 
count=0; 
while(fscanf(fptr,"%s %s %d %c %d",ftt.fname,ftt.lname,&ftt.year,&ftt.exam,&ftt.snote)!=EOF) 


if(ftt.exam=='A' && ftt.year==1995) { 
              
                 
aver+=ftt.snote; 
++count; 
} 
aver/=count; 


printf("Average=%f\n",aver); 


} else 
printf("Can't open file %s\n",argv[1]); 


} else 
printf("Syntax: programfile inputfile\n"); 




}

[/tag]

[std10093]

Welcome.Your code does not insert the body of the if you want..(line 30-35),because this conditions are true

if(ftt.exam=='A' && ftt.year==1995)

So this has to do with the data or/and with how you wrote the code(the conditions,where you did put the printf etc)

[qny]

You have to call your program with a specific filename as a parameter.
If you're using a command shell, try

program filename.dat

[jimblumberg]

The following snippet is not quite correct:

while(fscanf(fptr,"%s %s %d %c %d",ftt.fname,ftt.lname,&ftt.year,&ftt.exam,&ftt.snote)!=EOF)

The fscanf() function only returns EOF if a failure ocurrs reading the first item. What happens if it reads the first item correctly but fails to properly read the second?

Since you are trying to read 5 items you may want to insure that the function does indeed read all 5 items. This function also returns the number of items successfully read if it reads any data. So I actually recommend that you replace the EOF with the number of format specifiers, in this case 5.

Jim

[Gola]

thank you guys for your replys,im working on it and ill post the right code in a few hours/days