int bitManipulation1(int n, int m, int i) { // 在此处补充你的代码 return (n & ~(1 << i)) | (m & (1 << i)); } int main() { int n, m, i, t; cin >> t; while (t--) { cin >> n >> m >> i; cout << bitManipulation1(n, m, i) << endl; } return 0;...
// To clear all bits from the most significant bit through i (inclusive), we do: int clearMSBthroughI(int num, int i) { int mask = (1 << i) - 1; return num & mask; } // To clear all bits from i through 0 (inclusive), we do: int clearBitsIthrough0(int num, int i) {...
static inline void SETBIT(unsigned char *A, int k) { A[k >> 3] |= (1 << (k & 7)); } static inline void CLRBIT(unsigned char *A, int k) { A[k >> 3] &= ~(1 << (k & 7)); } static inline int GETBIT(unsigned char *A, int k) { return (A[k >> 3] & (1...
也就是说,声明了一个int变量a,然后声明一个int 的指针,*p指向a的地址,&也就是取地址符号,而*是指针中取内容的符号,仅仅在声明的时候标记这个变量是指针.可能有点绕口,但是看代码来的容易的多... 1.与const在一起的时候 常常声明的时候会让人一头雾水,比如下面的声明,均是声明一个char* p的指针: char ...
g) int (*a)(int); // A pointer to a function a that takes an integer argument and returns an integer h) int (*a[10])(int); // An array of 10 pointers to functions that take an integer argument and return an integer 四.重要关键字 ...
int a=0; //全局初始化区 char *p1; //全局未初始化区 main() { intb;栈 char s[]="abc"; //栈 char *p2; //栈 char *p3="123456"; //123456在常量区,p3在栈上。 static int c=0; //全局(静态)初始化区 p1 = (char*)malloc(10); ...
g) int (*a)(int); // A pointer to a function a that takes an integer argument and returns an integer h) int (*a[10])(int); // An array of 10 pointers to functions that take an integer argument and return an integer 人们经常声称这里有几个问题是那种要翻一下书才能回答的问题,我...
longsquare(volatileint*ptr); {inta;a=*ptr;returna*a;}; 七、位操作(Bitmanipulation)。 嵌入式系统总是要用户对变量或寄存器进行位操作。给定一个整 型变量a,写两段代码,第一个设置a的bit3,第二个清除a的bit 3。在以上两个操作中,要保持其它位不变。
center for american e center for health law center for public int center for the study center for tropical f center for world deve center fuel melting center functions center housing center line of suctio center main bearing l center of force center of gravity abo center of jet exit center ...
continuous pour concr continuous record int continuous recorder continuous regenerati continuous renal repl continuous sensitivit continuous string coi continuous thin mill continuous three-phas continuous throughput continuous turning ac continuous view state continuous volta to r continuous wave jamme continuous...