• Taylor (55/55) Aug 08 2003 I'm trying to write to a dynamic string array that's a parameter to a fu...
• Mike Wynn (12/67) Aug 08 2003 try "%.*s" if your pass a char[] and just "%s" for a char *
• Mike Wynn (62/66) Aug 08 2003 // ----- try this it compiles and works without error.

Taylor <Taylor_member pathlink.com> writes:

I'm trying to write to a dynamic string array that's a parameter to a function
and having no luck. I'm pretty sure that I am missing something, but, after
trying a few things, have no clue as to what I am doing wrong. Here's the test
code that I have written to test a few scenarios:

void testFunc(char[] test)
{
printf("test.length = %d\n", test.length);
test = "12345";
printf("test.length = %d\n", test.length);
}

void testFunc2(char* test)
{
test = new char[5];
test = "12345";
}

void testFunc3(char** test)
{
*test = new char [5];
*test = "12345";
}

void testFunc4(out char[] test)
{
test = "12345";
}

char[] testFunc5(char[] test)
{
test = "12345";
return test;
}

void main(char[][] arg)
{
char[] a;
printf("a.length = %d\n", a.length);
testFunc(a);

printf("a: %.s\n", a);
printf("a.length = %d\n", a.length);

char* b;
testFunc2(b);
printf("b: %.s\n", b);

char* c;
testFunc3(&c);
printf("c: %.s\n", c);

char[] d;
testFunc4(d);
printf("d: %.s\n", d);

char[] d = testFunc5(d);
printf("d: %.s\n", d);
}

None of the five scenarios print anything out (actually the result of testFunc4
and testFunc5 are Access Violations (these were expected, but I just added them
to see if there was something I was missing...)) To me, the most obvious test
that should have worked was the first one.

Any help would be appreciated...

Thanks,
Taylor Boon

"Mike Wynn" <mike.wynn l8night.co.uk> writes:

try "%.*s" if your pass a char[] and just "%s" for a char *

did this compile ?
char[] d = testFunc5(d); should have given you an error (d already defined
in main)


"Taylor" <Taylor_member pathlink.com> wrote in message
news:bh0srb$8nb$1 digitaldaemon.com...
 I'm trying to write to a dynamic string array that's a parameter to a

function
 and having no luck. I'm pretty sure that I am missing something, but,

after
 trying a few things, have no clue as to what I am doing wrong. Here's the

test
 code that I have written to test a few scenarios:

 void testFunc(char[] test)
 {
 printf("test.length = %d\n", test.length);
 test = "12345";
 printf("test.length = %d\n", test.length);
 }

 void testFunc2(char* test)
 {
 test = new char[5];
 test = "12345";
 }

 void testFunc3(char** test)
 {
 *test = new char [5];
 *test = "12345";
 }

 void testFunc4(out char[] test)
 {
 test = "12345";
 }

 char[] testFunc5(char[] test)
 {
 test = "12345";
 return test;
 }

 void main(char[][] arg)
 {
 char[] a;
 printf("a.length = %d\n", a.length);
 testFunc(a);

 printf("a: %.s\n", a);
 printf("a.length = %d\n", a.length);

 char* b;
 testFunc2(b);
 printf("b: %.s\n", b);

 char* c;
 testFunc3(&c);
 printf("c: %.s\n", c);

 char[] d;
 testFunc4(d);
 printf("d: %.s\n", d);

 char[] d = testFunc5(d);
 printf("d: %.s\n", d);
 }

 None of the five scenarios print anything out (actually the result of

testFunc4
 and testFunc5 are Access Violations (these were expected, but I just added

them
 to see if there was something I was missing...)) To me, the most obvious

test
 that should have worked was the first one.

 Any help would be appreciated...

 Thanks,
 Taylor Boon

"Mike Wynn" <mike.wynn l8night.co.uk> writes:

// ----- try this it compiles and works without error.
import c.stdio;

void testFunc(char[] test)
{
printf("test.length = %d\n", test.length);
test = "12345";
printf("test.length = %d\n", test.length);
}

void testFunc2(char* test)
{
test = new char[5];
test = "12345";
}

void testFunc3(char** test)
{
*test = new char [5];
*test = "12345";
}

void testFunc4(out char[] test)
{
test = "12345";
}

char[] testFunc5(char[] test)
{
test = "12345";
return test;
}

void main(char[][] arg)
{
char[] a;
printf("a.length = %d\n", a.length);
testFunc(a);

printf("a: %.s\n", a);
printf("a.length = %d\n", a.length);

char* b;
testFunc2(b);
printf("b: %s\n", b);

char* c;
testFunc3(&c);
printf("c: %s\n", c);

char[] d;
testFunc4(d);
printf("d: %.*s\n", d);

d = testFunc5(d);
printf("d: %.*s\n", d);
}


/* output is as your would expect!
a.length = 0
test.length = 0
test.length = 5
a:
a.length = 0
b: (null)
c: 12345
d: 12345
d: 12345
*/

"Taylor" <Taylor_member pathlink.com> wrote in message
news:bh0srb$8nb$1 digitaldaemon.com...
 I'm trying to write to a dynamic string array that's a parameter to a

function
 and having no luck. I'm pretty sure that I am missing something, but,

after
 trying a few things, have no clue as to what I am doing wrong. Here's the

test
 code that I have written to test a few scenarios: