C language strcmpi() function: compare the size of two strings

Function name : strcmpi

Header file : <string.h>

Function prototype : int strcmpi(char *str1, char *str2);

Function : Compare the size of two strings, but not case sensitive

Parameters : str1 and str2 are the strings to be compared

Return value : str1>str2 returns 1;

str1==str2 returns 0;

str1<str2 returns -1;

Program example : Compare the strings buf1 and buf2, case-insensitively, and output the result

 #include<string.h>#include<stdio.h>intmain(void){char*buf1=www.dotcpp.com,*buf2=WWW.DOTCPP.COM;intptr=strcmpi(buf2,buf1);if(ptr >0){printf(buffer2isgreaterthanbuffer1n);}if(ptr<0){printf(buffer2islessthanbuffer1n);}if(ptr==0){printf(buffer2equalsbuffer1n);}return0;}

Running results:

 buffer2equalsbuffer1