原型:extern int strnicmp(char *s1,char * s2,int n); 用法:#include <string.h> 功能:比较字符串s1和s2的前n个字符但不区分大小写。 说明:strncmpi是到strnicmp的宏定义 当s1<s2时,返回值<0 当s1=s2时,返回值=0 当s1>s2时,返回值>0 举例: // strnicmp.c #include <syslib.h> #include <string.h> main() { char *s1="Hello, Programmers!"; char *s2="Hello, programmers!"; int r; clrscr(); r=strnicmp(s1,s2,strlen(s1)); if(!r) printf("s1 and s2 are identical"); else if(r<0) printf("s1 less than s2"); else printf("s1 greater than s2"); getchar(); return 0; } 相关函数:bcmp,memcmp,stricmp,strncmp