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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; }
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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; }
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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; }
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