Undeclared identifier

[John]

I keep getting "error C2065: 'p' : undeclared identifier" (it's the same for
t, d, t1, etc...), while using the following programming.

#include <iostream.h>
#include <stdlib.h>
#include <math.h>
#include <iomanip.h>
#include <fstream.h>

int main()
{
fstream suture("SUTURE.dat", ios::in)
double temp;
double pressure;
double dwell;
suture >> batch >> temp >> pressure >> dwell;

double t;
double t1
if (temp<150, temp>170)
++t;
t1=(t*20);

double p;
double p1;
if (pressure<60, pressure>70)
++p;
p1=(p*20);

double d;
double d1;
if (dwell<2, dwell>2.5)
++d;
d1=(d*20);
}

I basically need to import the suture file and come up with rejection
percentages. As far as I can tell, I've identified everything with the
double floater. Any thoughts? TIA

 

[Jaspreet]

I keep getting "error C2065: 'p' : undeclared identifier" (it's the same for
t, d, t1, etc...), while using the following programming.

#include <iostream.h>
#include <stdlib.h>
#include <math.h>
#include <iomanip.h>
#include <fstream.h>

why use so many headers ? I do think you may need all of them. Also

int main()
{
fstream suture("SUTURE.dat", ios::in)

No semicolon at the end of the statement..

double temp;
double pressure;
double dwell;
suture >> batch >> temp >> pressure >> dwell;

What is batch ??

double t;
double t1

No semicolon again..

if (temp<150, temp>170)
++t;
t1=(t*20);

double p;
double p1;
if (pressure<60, pressure>70)
++p;
p1=(p*20);

double d;
double d1;
if (dwell<2, dwell>2.5)
++d;
d1=(d*20);
}

I basically need to import the suture file and come up with rejection
percentages. As far as I can tell, I've identified everything with the
double floater. Any thoughts? TIA

Please post a correct copy of your code and let us know if you still
have the error(s).

 

[gangs]

what is the comma (,) doing in the if loop?

gangs.

 

[Jim Langston]

I keep getting "error C2065: 'p' : undeclared identifier" (it's the same
for
t, d, t1, etc...), while using the following programming.

#include <iostream.h>
#include <stdlib.h>
#include <math.h>
#include <iomanip.h>
#include <fstream.h>

int main()
{
fstream suture("SUTURE.dat", ios::in)

need ; at end of line

double temp;
double pressure;
double dwell;
suture >> batch >> temp >> pressure >> dwell;

double t;
double t1
if (temp<150, temp>170)
++t;

t was never initialized. Value here is just about anything.

t1=(t*20);

since t is just about anything, t1 is just about anything times 20.

double p;
double p1;
if (pressure<60, pressure>70)
++p;
p1=(p*20);

Same here, p never initialized.

double d;
double d1;
if (dwell<2, dwell>2.5)
++d;
d1=(d*20);

Need I say it about d?

 

[Jaspreet]

what is the comma (,) doing in the if loop?

gangs.

If is not a loop. Loop is something which repeats itself a specified
number of time. if is a conditional statement.