basics of array passing and string parsing

**gregh** · 03-01-2002

I need to program a simple language generator from user input in BNF. I have never programmed in c before.

I am having problems dealing with multi-d array passing. From what I've read C passes the pointer to the array, but no matter what I do I keep getting an illegal type error when I first try to reference. The book I bought is real basic.

One other question is there an easy way to deal with strings other than as an array of char?

Below is the section of code giving me problems :

void processinput(char therules[][])
{
int x;
int y;
int count;
char temp[25];
for(x=0;x<numrul;++x)
{
y=0;
while(therules[x][y]==' ')<-this is where throws error
y=y+1;
if(therules[x][y]=='<')
{
++y;

count=0;
while(therules[x][y]!='>' & y< strlen(therules[x]))
{
temp[count]=therules[x][y];
++count;
++y;
}}}
}

**foniks munkee** · 03-01-2002

Just a couple of things:

Code:

void processinput(char therules[][])

You can't pass a two dimensional array to a function without declaring its size like so..

If it was initially declared as :
char therules[2][4]

the you would call processinput like such:
void processinput(char therules[][4])

You could do this:
void processinput(char therules[2][4])

which is clearer but the 2 is ignored anyway.

Code:

while(therules[x][y]!='>' & y< strlen(therules[x]))

I am assuming you are trying to evaluate while (leftstatement and rightstatement)..
You should have:

Code:

while( therules[x][y] != '>' && y < strlen(therules[x]) )

&& = logical and
& = address operator or bitwise and

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