8 replies to this topic

[carbon]

How can I see in C if array is equal to "word"?

I think is this but Im not sure:

if(array1=="awesome"){
do this code
}

[TheCompBoy]

Never worked with C but isn't it something like:

if(array1[PositionNumber]=="awesome"){

do this code

}

I think you use the square brackets just like in C++ and Java and the other languages.. As i said i never worked with C so please correct me if im wrong.

[carbon]

Its working. It was always confusing for me working with arrays... I thought if I input "awesome" it will take 7 places in an array. That is little confusing.

One more question. How to find a phrase in array.

Eg.

array=> la ha la la ha ha ha la la ha la
phrase=> la ha la

[gregwarner]

In C, the == operator is not used for string equivalence. == tests for reference equivalence.

To test string equivalence in C, use strncmp().

strstr() is used to locate a substring within a larger string.

[carbon]

gregwarner said:

strstr() is used to locate a substring within a larger string.

Can I do it without using any built-in function, only <stdio.h>? Is there any other way?

[Sysop_fb]

Write your own implementation of strcmp then using pointers.

int mystrcmp(const char *s1, const char *s2)
{
        while (*s1==*s2)
........
........
........
}

[gregwarner]

carbon said:

Can I do it without using any built-in function, only <stdio.h>? Is there any other way?

You would have to loop over each character in the array until you found two differing characters, or a null terminator.

Any particular reason why you cannot use the C library functions? There are some pretty handy functions in string.h for doing this kind of stuff.

[carbon]

gregwarner said:

Any particular reason why you cannot use the C library functions? There are some pretty handy functions in string.h for doing this kind of stuff.

Its competition.

[gregwarner]

I see. Have fun! Good luck!