LinuxÖÐCÓïÑÔÖÐλÔËËãµÄÓ¦ÓÃ̽ÌÖ
LinuxÖÐCÓïÑÔÖÐλÔËËãµÄÓ¦ÓÃ̽ÌÖ
ÔÚÅÌËã»ú¿ÆѧÖУ¬Î»ÔËËãÊÇÒ»ÖÖ¶Ô¶þ½øÖÆÊý×ֵIJÙ×÷£¬Í¨³£ÓÃÓÚ´¦Öóͷ£µ×²ãÊý¾ÝÌåÏÖºÍÓÅ»¯³ÌÐòÐÔÄÜ¡£ÔÚLinuxϵͳÖУ¬CÓïÑÔÖÐλÔËËãµÄÓ¦ÓþßÓÐÆÕ±éµÄÏÖʵÒâÒ壬Äܹ»×ÊÖú³ÌÐòÔ±¸ü¸ßЧµØ½â¾öÎÊÌâ¡£±¾ÎĽ«Ì½ÌÖLinuxÇéÐÎÏÂCÓïÑÔÖÐλÔËËãµÄ»ù´¡ÖªÊ¶£¬²¢¸ø³öÏêϸµÄ´úÂëʾÀýÀ´ÑÝʾÆäÓ¦Óá£
1. λÔËËãµÄ»ù´¡ÖªÊ¶
λÔËËãÊǶԶþ½øÖÆλµÄ²Ù×÷£¬Ö÷Òª°üÀ¨°´Î»Ó루&£©¡¢°´Î»»ò£¨|£©¡¢°´Î»Òì»ò£¨^£©¡¢°´Î»È¡·´£¨~£©µÈ²Ù×÷¡£ÔÚCÓïÑÔÖУ¬Ê¹ÓÃÕâЩÔËËã·û¿ÉÒÔ¾ÙÐÐλ¼¶±ðµÄ²Ù×÷¡£ÏêϸÀ´Ëµ£º
°´Î»Ó루&£©£ºÁ½¸ö²Ù×÷ÊýµÄ¶ÔӦλ¶¼Îª1ʱЧ¹ûΪ1£¬²»È»Îª0¡£
°´Î»»ò£¨|£©£ºÁ½¸ö²Ù×÷ÊýµÄ¶ÔӦλֻҪÓÐÒ»¸öΪ1ʱЧ¹ûΪ1£¬²»È»Îª0¡£
°´Î»Òì»ò£¨^£©£ºÁ½¸ö²Ù×÷ÊýµÄ¶ÔӦλÏàͬЧ¹ûΪ0£¬²î±ðÔòЧ¹ûΪ1¡£
°´Î»È¡·´£¨~£©£º¶Ô²Ù×÷ÊýµÄÿһλȡ·´¡£
2. ´úÂëʾÀý
ÏÂÃæÎÒÃǸø³öһЩÏêϸµÄ´úÂëʾÀý£¬Õ¹Ê¾Î»ÔËËãÔÚLinuxÇéÐÎÏÂCÓïÑÔÖеÄÓ¦Óãº
Á¬Ã¦Ñ§Ï°¡°CÓïÑÔÃâ·ÑѧϰÌõ¼Ç£¨ÉîÈ룩¡±£»
2.1 λÔËËãʵÏÖ½»Á÷Á½Êý
#include <stdio.h> void swap(int *a, int *b) { *a = *a ^ *b; *b = *a ^ *b; *a = *a ^ *b; } int main() { int x = 10, y = 20; printf("Before swap: x=%d, y=%d ", x, y); swap(&x, &y); printf("After swap: x=%d, y=%d ", x, y); return 0; }
µÇ¼ºó¸´ÖÆ
2.2 ¼ì²éÆæżÐÔ
#include <stdio.h> int isOdd(int num) { return num & 1; } int main() { int num = 5; if (isOdd(num)) { printf("%d is an odd number ", num); } else { printf("%d is an even number ", num); } return 0; }
µÇ¼ºó¸´ÖÆ
2.3 ÉèÖÃijλΪ1
#include <stdio.h> void setBit(int *num, int pos) { *num |= (1 << pos); } int main() { int num = 5; int pos = 2; printf("Before setting bit %d: %d ", pos, num); setBit(&num, pos); printf("After setting bit %d: %d ", pos, num); return 0; }
µÇ¼ºó¸´ÖÆ
3. ×ܽá
ͨ¹ýÒÔÉÏ´úÂëʾÀý£¬ÎÒÃÇչʾÁËÔÚLinux»·
ÒÔÉϾÍÊÇLinuxÖÐCÓïÑÔÖÐλÔËËãµÄÓ¦ÓÃ̽ÌÖµÄÏêϸÄÚÈÝ£¬¸ü¶àÇë¹Ø×¢±¾ÍøÄÚÆäËüÏà¹ØÎÄÕ£¡