2012年8月27日 · As always, RTFM before using a function. Even the C standard is blatantly clear over how strcmp () behaves: The strcmp function returns an integer greater than, equal to, or less than zero, accordingly as the string pointed to by s1 is greater than, equal to, or less than the string pointed to by s2. That's it, no further guarantees.

2013年5月15日 · I am fairly new to C, and I am trying to understand using strings and strcmp to compare two strings in an if statement. My goal is to be able to run a different function depending on what the user...

2017年6月2日 · Normally strcmp is used with two arguments [e.g. strcmp(str1,"garden")], and it will return 0 if both are the same. Is it possible to compare part of the input, say the first five character of the...

strcmp returns an integer value; zero if the input strings are equivalent, non-zero otherwise. So yes, the result of a strcmp call can be the operand of the && or || operators:

2016年1月16日 · The strcmp () and strncmp () functions return an integer less than, equal to, or greater than zero if s1 (or the first n bytes thereof) is found, respectively, to be less than, to match, or be greater than s2.

2017年3月27日 · In the code below I use strcmp to compare two strings and make this comparison the condition of an if statement. With the code below, the output will be hello world, because string "one" is equal to string "two".

Basically what it does is to take the two char* variables, after being transferred to lower case, and make use the strcmp function on them. For example- if we call the strcmpInsensitive function for values of "AbCdE", and "ABCDE", it will first return both values in lower case ("abcde"), and then do strcmp function on them.

Use strcmp. This is in string.h library, and is very popular. strcmp return 0 if the strings are equal. See this for an better explanation of what strcmp returns. Basically, you have to do: while (strcmp(check,input) != 0) or while (!strcmp(check,input)) or while (strcmp(check,input)) You can check this, a tutorial on strcmp.

Consider strcmp("\0a", ""), this will break after the first character and compare non-equal, even though it should return zero. Please test both implementations with several inputs and verify that they are working as expected.

2016年4月9日 · I understand that if you have 'cat' (string1) and 'dog' (string2) in strcmp (this is a C question) then the return value of strcmp would be less than 0 (since 'cat' is lexically less than 'dog').