coding matter please help
i am trying to write and read a simple program using these codes. writing code seems to work fine,it prompts for data and after it terminates properly.but the reading code only give me the error "file could not be opened". I am using visual studio 2008 express. thank you!!
writing code
#include
int main(void)
{
int account;
char name[30];
double balance;
FILE *cptr;
if ((cptr=fopen("clients.dat","w"))==NULL){
printf("hello world");
}
else{
printf("enter the account details\n");
printf("enter EOF\n");
printf("?");
scanf("%d%s%lf",&account,name,&balance);
while(!feof(stdin))
{
fprintf(cptr,"%d%s%.2f\n",account,name,balance);
printf("?");
scanf("%d%s%lf",&account,name,&balance);
}
fclose(cptr);
}
return 0;
}
reading code
#include
#include
int main(void)
{
int account;
char name[30];
double balance;
FILE *cptr;
if (( cptr = fopen("clients.dat","r")) == NULL){
printf("file cannot be opened\n");
}
else
{
printf("%-10s%-13s%s\n","Account","Name","Balance");
fscanf(cptr,"%d%s%lf",&account,name,&balance);
while (!feof(cptr)){
printf("%-10d%-13s%7.2f",account,name,balance);
fscanf(cptr,"%d%s%lf",&account,name,&balance);
}
fclose(cptr);
}
getch();
return 0;
}
writing code
#include
int main(void)
{
int account;
char name[30];
double balance;
FILE *cptr;
if ((cptr=fopen("clients.dat","w"))==NULL){
printf("hello world");
}
else{
printf("enter the account details\n");
printf("enter EOF\n");
printf("?");
scanf("%d%s%lf",&account,name,&balance);
while(!feof(stdin))
{
fprintf(cptr,"%d%s%.2f\n",account,name,balance);
printf("?");
scanf("%d%s%lf",&account,name,&balance);
}
fclose(cptr);
}
return 0;
}
reading code
#include
#include
int main(void)
{
int account;
char name[30];
double balance;
FILE *cptr;
if (( cptr = fopen("clients.dat","r")) == NULL){
printf("file cannot be opened\n");
}
else
{
printf("%-10s%-13s%s\n","Account","Name","Balance");
fscanf(cptr,"%d%s%lf",&account,name,&balance);
while (!feof(cptr)){
printf("%-10d%-13s%7.2f",account,name,balance);
fscanf(cptr,"%d%s%lf",&account,name,&balance);
}
fclose(cptr);
}
getch();
return 0;
}
Replies
-
Deiteli am an administrator in the computer,do you think I might not have to right to write on the disk,if so is there a way to change it😔 -
PraveenKumar PurushothamanHey, this code runs only in Turbo C and not Visual Studio. 😀 Please download Borland C for Windows and try it out... 😀
You are reading an archived discussion.
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