lfind.c
来源：互联网 发布：黑魂3知乎 编辑：程序博客网 时间：2024/05/16 05:21
<iframe name="google_ads_frame" marginwidth="0" marginheight="0" src="http://pagead2.googlesyndication.com/pagead/ads?client=ca-pub-5572165936844014&dt=1194442938015&lmt=1194190197&format=336x280_as&output=html&correlator=1194442937843&url=file%3A%2F%2F%2FC%3A%2FDocuments%2520and%2520Settings%2Flhh1%2F%E6%A1%8C%E9%9D%A2%2FCLanguage.htm&color_bg=FFFFFF&color_text=000000&color_link=000000&color_url=FFFFFF&color_border=FFFFFF&ad_type=text&ga_vid=583001034.1194442938&ga_sid=1194442938&ga_hid=1942779085&flash=9&u_h=768&u_w=1024&u_ah=740&u_aw=1024&u_cd=32&u_tz=480&u_java=true" frameborder="0" width="336" scrolling="no" height="280" allowtransparency="allowtransparency"></iframe> #include <stdlib.h>
#include <stdio.h>
int compare_int(int *a, int *b)
{
return(*a - *b);
}
int compare_float(float *a, float *b)
{
return((*a == *b) ? 0: 1);
}
void main(void)
{
int int_values[] = {1, 3, 2, 4, 5};
float float_values[] = {1.1, 3.3, 2.2, 4.4, 5.5};
int *int_ptr, int_value = 2, elements = 5;
float *float_ptr, float_value = 33.3;
int_ptr = lfind(&int_value, int_values,
&elements, sizeof(int),
(int (*) (const void *, const void *)) compare_int);
if (*int_ptr)
printf("Value %d found/n", int_value);
else
printf("Value %d not found/n", int_value);
float_ptr = lfind(&float_value, float_values,
&elements, sizeof(float),
(int (*) (const void *, const void *)) compare_float);
if (*float_ptr)
printf("Value %3.1f found/n", float_value);
else
printf("Value %3.1f not found/n", float_value);
}
