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func return 2 values
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Join Date: Nov 2008
Posts: 81
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Junior Poster in Training
Ok, let's go step by step.
We will create a struct that has two members, a char and an int.
Go on and declare the struct.
We will create a struct that has two members, a char and an int.
Go on and declare the struct.
grumpier
I didn't ask you to write the func that i want, but I want another example but with parameters to understand the way.
minas I have write the func with structer
I didn't ask you to write the func that i want, but I want another example but with parameters to understand the way.
minas I have write the func with structer
#include<stdio.h>
struct mytype
{
int ok;
char ch;
};
struct mytype fundCalculation(int a,int b,int c)
{
struct mytype tmp;
if(c==a+b) {tmp.ok=1;tmp.ch='+';}
else if(c==a-b) {tmp.ok=1;tmp.ch='-';}
else if(c==a*b) {tmp.ok=1;tmp.ch='*';}
else if(c==a/b) {tmp.ok=1;tmp.ch='/';}
else {tmp.ok=0;tmp.ch=' ';}
return tmp;
}
main()
{
printf("%i %c ",fundCalculation(3,4,12).ok,fundCalculation(3,4,12).ch);
getchar();
} •
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Join Date: Nov 2008
Posts: 81
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Junior Poster in Training
Well it works, good job!
Some tips:
Use this form when declaring a struct.
So you don't have to prefix mytype with struct all the time. Now you can do this:
Some tips:
Use this form when declaring a struct.
C Syntax (Toggle Plain Text)
So you don't have to prefix mytype with struct all the time. Now you can do this:
C Syntax (Toggle Plain Text)
Last edited by minas1; Jan 10th, 2009 at 7:40 am.
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Join Date: Nov 2008
Posts: 81
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Solved Threads: 8
Junior Poster in Training
Then instead of ints in the argument list, use pointers to ints.
a pointer to int: int *a = 0;
when you call the function, you need to pass addresses.
so
int x = 4;
callSomeFuncTakingPointers(&x);
when you need to access a value stored in a pointer, you the * operator.
int x = 3;
int *p = &x;
printf(%d, *p);
If you want to learn more about pointers,
http://www.cplusplus.com/doc/tutorial/pointers.html
a pointer to int: int *a = 0;
when you call the function, you need to pass addresses.
so
int x = 4;
callSomeFuncTakingPointers(&x);
when you need to access a value stored in a pointer, you the * operator.
int x = 3;
int *p = &x;
printf(%d, *p);
If you want to learn more about pointers,
http://www.cplusplus.com/doc/tutorial/pointers.html
Last edited by minas1; Jan 10th, 2009 at 8:01 am.
like this ?
int findCalculation(int *a, int *b, int *c)
{
char ch;
if (*a - *b == *c)
return 1;
else return 0;
if (*a + *b == *c)
return 1;
else return 0;
if (*a * *b == *c)
return 1;
else return 0;
if (*a / *b == *c)
return 1;
else return 0;
} •
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Join Date: Nov 2008
Posts: 81
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Junior Poster in Training
Yes, but use our function that returns the struct.
?!! •
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Join Date: Nov 2008
Posts: 81
Reputation:
Solved Threads: 8
Junior Poster in Training
C Syntax (Toggle Plain Text)
Instead of passing ints, pass pointers to ints. you did it above; try it and show us, even if it doesn't compiles.
like this ??
C Syntax (Toggle Plain Text)
Last edited by titosd; Jan 10th, 2009 at 8:32 am.
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