greatbear_us的专栏

Write code to round numbers?#include #include int roundedNumber(double num);int main(){ int num = roundedNumber(5.56); printf("%d\n", num); return 0;}int roundedNumber(double num)

#include #include int factorial(int n);int main(){ int rs = fact(5); printf("%d\n", rs); return 0;}int factorial(int n){ if(n == 1) return 1; return factorial(n-1)

#include #include int gcd(int a, int b);int gcdRecursive(int, int);int gcdRecursiveHelper(int, int);void swap(int* a, int* b);int main(){ int a = gcd(56,12); int b = gcdRecursive(18, 1

Check if a string is palindrome.#include #include int palindrome(char str[]);int main(){ char str[] ="abcba"; printf("%c\n",str[5]); if(palindrome(str)){ printf("is palindr

#include #include int fabonicciRecursive(int);int fabonicci(int);int main(){ int rs = fabonicci(5); int rs2 = fabonicciRecursive(5); printf("%d\n", rs); printf("%d\n", rs2);

int reverseNum(int num){ int result = 0; int tmp; while(num > 0){ tmp = num % 10; result = 10 * result + tmp; num /= 10; } return result;}

#define my_sizeof(type) (char *)(&type+1)-(char*)(&type)

int ispowerof2(unsigned int x) { return x && !(x & (x - 1));}Note that the bit pattern of a power of two is of the form 10...0 and that of a number just one less is 011...1.