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Join Date: Aug 2008
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Newbie Poster
I just started teaching myself c with a book called practical c programming, and i can't figure out one of the exercises. I'm supposed to write a function that scans a character array for the character - and replace it with _. I tried doing it, but i don't think i fully understand how to pass arrays between functions or whatever. Here's what i got, please help me.
char replace(char string[100])
{
int i; //increment
for (i=0; string != '\0'; i++)
{
if (string[i] == '-')
string[i] = '_';
}
return(string[i]);
}
int main()
{
char line[100];
printf("Enter a string: ");
fgets(line, sizeof(line), stdin);
printf("New string: %s", replace(line));
} Last edited by jess29 : 14 Days Ago at 10:12 am.
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Join Date: Dec 2005
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> string != '\0'
Compare with string[i] != '\0'
Also, make the function return a char*, and return string.
That is, if you want to print the result with %s
Compare with string[i] != '\0'
Also, make the function return a char*, and return string.
That is, if you want to print the result with %s
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
Do not PM me for help; You'll be ignored, or told to learn to read.
Do not ask me if I'm muslim - I'm not. Nor do I care about yours or anyone else's mysticism. Religion is a matrix, take the RED PILL.
Do not PM me for help; You'll be ignored, or told to learn to read.
Do not ask me if I'm muslim - I'm not. Nor do I care about yours or anyone else's mysticism. Religion is a matrix, take the RED PILL.
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Join Date: Aug 2008
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Newbie Poster
i tested it and it just said memory fault
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Join Date: Dec 2005
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Tested what?
If you made changes, and it doesn't work, then post your updated code.
If you made changes, and it doesn't work, then post your updated code.
If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
Do not PM me for help; You'll be ignored, or told to learn to read.
Do not ask me if I'm muslim - I'm not. Nor do I care about yours or anyone else's mysticism. Religion is a matrix, take the RED PILL.
Do not PM me for help; You'll be ignored, or told to learn to read.
Do not ask me if I'm muslim - I'm not. Nor do I care about yours or anyone else's mysticism. Religion is a matrix, take the RED PILL.
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Join Date: Aug 2008
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Newbie Poster
char replace(char string[100])
{
int i; //increment
for (i=0; string[i] != '\0'; i++)
{
if (string[i] == '-')
string[i] = '_';
}
return(*string);
}
int main()
{
char line[100];
printf("Enter a string: ");
fgets(line, sizeof(line), stdin);
printf("New string: %s", replace(line));
}
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Join Date: Dec 2005
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char *replace(char string[100])
and
return(string); If you dance barefoot on the broken glass of undefined behaviour, you've got to expect the occasional cut.
Do not PM me for help; You'll be ignored, or told to learn to read.
Do not ask me if I'm muslim - I'm not. Nor do I care about yours or anyone else's mysticism. Religion is a matrix, take the RED PILL.
Do not PM me for help; You'll be ignored, or told to learn to read.
Do not ask me if I'm muslim - I'm not. Nor do I care about yours or anyone else's mysticism. Religion is a matrix, take the RED PILL.
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Join Date: Dec 2006
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char *replace(char string[100])You can write it like
char *replace ( char string[] ) or even like char *replace( char *string ). Last edited by Aia : 14 Days Ago at 5:54 pm.
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