{"id":24382,"date":"2024-03-16T03:03:36","date_gmt":"2024-03-16T03:03:36","guid":{"rendered":"https:\/\/www.silicloud.com\/blog\/what-is-the-library-function-for-string-comparison-in-the-c-language\/"},"modified":"2024-03-22T03:35:10","modified_gmt":"2024-03-22T03:35:10","slug":"what-is-the-library-function-for-string-comparison-in-the-c-language","status":"publish","type":"post","link":"https:\/\/www.silicloud.com\/blog\/what-is-the-library-function-for-string-comparison-in-the-c-language\/","title":{"rendered":"What is the library function for string comparison in the C language?"},"content":{"rendered":"

In the C language, the library function used to compare strings is `strcmp()`. It compares the contents of two strings and returns an integer value to indicate the result of the comparison.<\/p>\n

The declaration of the `strcmp()` function is as follows:<\/p>\n

int strcmp(const char *str1, const char *str2);<\/pre>\n
The function takes in two parameters of type `const char*`, which are the two strings to be compared.<\/p>\n
The meaning of the return value of the function is as follows:<\/p>\n
If `str1` is equal to `str2`, return 0.<\/p>\n
If `str1` is less than `str2`, a negative number (usually -1) will be returned.<\/p>\n
If `str1` is greater than `str2`, it will return a positive number (usually 1).<\/p>\n
For example, the following code demonstrates how to compare two strings using the `strcmp()` function.<\/p>\n
#include <stdio.h>
<\/p>
#include <string.h><\/p>
int main() {<\/p>
   char str1[] = \"Hello\";<\/p>
   char str2[] = \"World\";<\/p>
   int result = strcmp(str1, str2);<\/p>
   if (result == 0) {<\/p>
       printf(\"The strings are equal\\n\");<\/p>
   } else if (result < 0) {<\/p>
       printf(\"%s is less than %s\\n\", str1, str2);<\/p>
   } else {<\/p>
       printf(\"%s is greater than %s\\n\", str1, str2);<\/p>
   }<\/p>
   return 0;<\/p>
}<\/p><\/pre>\n
The output will be `Hello is less than World`, because the letter “H” has a lower value in the ASCII code than “W”.<\/p>\n","protected":false},"excerpt":{"rendered":"
In the C language, the library function used to compare strings is `strcmp()`. It compares the contents of two strings and returns an integer value to indicate the result of the comparison. The declaration of the `strcmp()` function is as follows: int strcmp(const char *str1, const char *str2); The function takes in two parameters of type `const char*`, which are the […]<\/p>\n","protected":false},"author":13,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_import_markdown_pro_load_document_selector":0,"_import_markdown_pro_submit_text_textarea":"","footnotes":""},"categories":[1],"tags":[],"class_list":["post-24382","post","type-post","status-publish","format-standard","hentry","category-uncategorized"],"yoast_head":"\nWhat is the library function for string comparison in the C language? - Blog - Silicon Cloud<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.silicloud.com\/blog\/what-is-the-library-function-for-string-comparison-in-the-c-language\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"What is the library function for string comparison in the C language?\" \/>\n<meta property=\"og:description\" content=\"In the C language, the library function used to compare strings is `strcmp()`. 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