error in executable

[Unregistered]

Hi,people!
In first,I want to thank a lot Hammer who hepl me wipe my errors in compilation.Now the application doesn't have any compiling problems.
But I got THE BIG ONE when I'm running my program.
This is the error message:

This program has performed an illegal operation and will be shut down.

I'll appreciate any ideas and help!
Thanks!

[my code]:

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


struct custname{
char last[10];
char first[10];
};
struct customer{
int custid;
struct custname name;
float prevbalance;
};
struct transaction{
char typepmt;
int custid;
int transid;
char item[20];
int itemqty;
float totalamt;
};
/*struct newcustomer{
int custid;
struct custname name;
float newbalance;
};*/

void readdata(struct customer *,int *,struct transaction *,int *);
float findtotal(char [20] ,int ); /*we'll call it inside of readdata*/
void printinvoice(struct customer *,int ,struct transaction *,int *);

main()
{
int num,num1;
struct customer cust[20];
struct transaction trans[60];

readdata(cust,&num,trans,&num1);
printinvoice(cust,num,trans,&num1);

}

void readdata(struct customer *cust, int *num,struct transaction *trans,int *num1)
{
char *instring;
char buffer[150],buffer1[300];
FILE *master,*transact,*invoice;
int count,count1;
float transamt;


master= fopen("master.txt","r");
if (master == NULL){
fprintf(stderr,"Error opening master input file\n");
exit(1);
}

transact = fopen("transact.txt", "r");
if (transact == NULL){
fprintf(stderr,"Error opening input transaction file\n");
exit(1);
}

count = 0;
count1 = 0;

while((instring=fgets( buffer,150,master))!=NULL){

if(cust[count].custid==cust[count+1].custid){
fprintf(stderr,"Customer ID is duplicate!\n");
exit(1);
}
count++;

*num= count;

while(fscanf(transact,"%d",&trans[count1].transid) != EOF){
fscanf(transact,"%s",trans[count1].typepmt);
fscanf(transact,"%5f",&trans[count1].custid);
if(&trans[count1].typepmt=="O"){

fscanf(transact,"%s",trans[count1].item[20]);
fscanf(transact,"%d",&trans[count1].itemqty);
trans[count1].totalamt=findtotal(trans[count1].item,trans[count1].itemqty);
/* fscanf(transact,"%$5.2f",&trans[count1].totalamt=findtotal(trans[count1].item,trans[count1].itemqty)); */
}
else{
fscanf(transact,"%$5.2f",&trans[count1].totalamt);
}
count1++;
}
}
*num1 = count1;

fclose(master);
fclose(transact);
return ;
}

float findtotal(char transitem[20],int transitemqty)
{
float total=0.00;

total= (float)transitem[20]*transitemqty;
return total;
}
void printinvoice(struct customer *cust, int num,struct transaction *trans, int *num1)
{
FILE *invoice;
int count,count1;
float balancedue;

invoice=fopen("cinvoice.txt","w");
if (invoice==NULL){
fprintf(stderr,"Error opening input transaction file\n");
exit(1);
}
fprintf(invoice,"\t\tCustomer invoice\n\n");
for(count = 0;count < num;count++){
fprintf(invoice,"Customer Name \t\tCustomer Account Number");
fprintf(invoice,"s% ",cust[count].name.last);
fprintf(invoice,"s%\t ",cust[count].name.first);
fprintf(invoice,"d%\t\n\n ",cust[count].custid);
fprintf(invoice,"Previous Balance $8.2f%\t \n\n\n",cust[count].prevbalance);
if(&trans[count1].typepmt=="O"){
fprintf(invoice,"%d\t",trans[count1].transid);
fprintf(invoice,"%s\t",trans[count1].item[20]);
fprintf(invoice,"%$5.2f\t\n\n",trans[count1].totalamt);
balancedue= cust[count].prevbalance + trans[count1].totalamt;
fprintf(invoice,"Balance Due $8.2f%\t \n\n",balancedue);
}
else{
fprintf(invoice,"payment\t");
fprintf(invoice,"%$5.2f\t",trans[count1].totalamt);

balancedue= cust[count].prevbalance - trans[count1].totalamt;
fprintf(invoice,"Balance Due $8.2f%\t \n\n",balancedue);
}
count1++;
}
*num1 = count1;
}

[CAP]

I can't help with the code but this is for the people that can...it is a clean forum version thats all.

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


struct custname{ 
char last[10]; 
char first[10]; 
}; 
struct customer{ 
int custid; 
struct custname name; 
float prevbalance; 
}; 
struct transaction{ 
char typepmt; 
int custid; 
int transid; 
char item[20]; 
int itemqty; 
float totalamt; 
}; 
/*struct newcustomer{ 
int custid; 
struct custname name; 
float newbalance; 
};*/ 

void readdata(struct customer *,int *,struct transaction *,int *); 
float findtotal(char [20] ,int ); /*we'll call it inside of readdata*/ 
void printinvoice(struct customer *,int ,struct transaction *,int *); 

main() 
{ 
int num,num1; 
struct customer cust[20]; 
struct transaction trans[60]; 

readdata(cust,&num,trans,&num1); 
printinvoice(cust,num,trans,&num1); 

} 

void readdata(struct customer *cust, int *num,struct transaction *trans,int *num1) 
{ 
char *instring; 
char buffer[150],buffer1[300]; 
FILE *master,*transact,*invoice; 
int count,count1; 
float transamt; 


master= fopen("master.txt","r"); 
if (master == NULL){ 
fprintf(stderr,"Error opening master input file\n"); 
exit(1); 
} 

transact = fopen("transact.txt", "r"); 
if (transact == NULL){ 
fprintf(stderr,"Error opening input transaction file\n"); 
exit(1); 
} 

count = 0; 
count1 = 0; 

while((instring=fgets( buffer,150,master))!=NULL){ 

if(cust[count].custid==cust[count+1].custid){ 
fprintf(stderr,"Customer ID is duplicate!\n"); 
exit(1); 
} 
count++; 

*num= count; 

while(fscanf(transact,"%d",&trans[count1].transid) != EOF){ 
fscanf(transact,"%s",trans[count1].typepmt); 
fscanf(transact,"%5f",&trans[count1].custid); 
if(&trans[count1].typepmt=="O"){ 

fscanf(transact,"%s",trans[count1].item[20]); 
fscanf(transact,"%d",&trans[count1].itemqty); 
trans[count1].totalamt=findtotal(trans[count1].item,trans[count1].itemqty); 
/* fscanf(transact,"%$5.2f",&trans[count1].totalamt=findtotal(trans[count1].item,trans[count1].itemqty)); */ 
} 
else{ 
fscanf(transact,"%$5.2f",&trans[count1].totalamt); 
} 
count1++; 
} 
} 
*num1 = count1; 

fclose(master); 
fclose(transact); 
return ; 
} 

float findtotal(char transitem[20],int transitemqty) 
{ 
float total=0.00; 

total= (float)transitem[20]*transitemqty; 
return total; 
} 
void printinvoice(struct customer *cust, int num,struct transaction *trans, int *num1) 
{ 
FILE *invoice; 
int count,count1; 
float balancedue; 

invoice=fopen("cinvoice.txt","w"); 
if (invoice==NULL){ 
fprintf(stderr,"Error opening input transaction file\n"); 
exit(1); 
} 
fprintf(invoice,"\t\tCustomer invoice\n\n"); 
for(count = 0;count < num;count++){ 
fprintf(invoice,"Customer Name \t\tCustomer Account Number"); 
fprintf(invoice,"s% ",cust[count].name.last); 
fprintf(invoice,"s%\t ",cust[count].name.first); 
fprintf(invoice,"d%\t\n\n ",cust[count].custid); 
fprintf(invoice,"Previous Balance $8.2f%\t \n\n\n",cust[count].prevbalance); 
if(&trans[count1].typepmt=="O"){ 
fprintf(invoice,"%d\t",trans[count1].transid); 
fprintf(invoice,"%s\t",trans[count1].item[20]); 
fprintf(invoice,"%$5.2f\t\n\n",trans[count1].totalamt); 
balancedue= cust[count].prevbalance + trans[count1].totalamt; 
fprintf(invoice,"Balance Due $8.2f%\t \n\n",balancedue); 
} 
else{ 
fprintf(invoice,"payment\t"); 
fprintf(invoice,"%$5.2f\t",trans[count1].totalamt); 

balancedue= cust[count].prevbalance - trans[count1].totalamt; 
fprintf(invoice,"Balance Due $8.2f%\t \n\n",balancedue); 
} 
count1++; 
} 
*num1 = count1; 
}

[kwigibo]

Go and double check your types in your scanf's and printf's, because looking at the code after I compiled it (gcc -Wall), have got incorrect formats. something like this is what you have done

int a=4;
printf("%f",a);

Also there where a few format specifiers back to front

you had "c%" instead of "%c"

[kwigibo]

I was bored so I fixed them, can you please Send me the data files so I can test it.

Here is the file, with corrections.