C基础部分习题

#define _CRT_SECURE_NO_WARNINGS #include <stdio.h> #include <stdlib.h> #include <string.h> //enum ENUM_A{ //X1, //Y1, //Z1 = 5, //A1, //B1 //}; //enum ENUM_A enumA = Y1; //enum ENUM_A enumB = B1; // //int main(){ //printf("%d,", enumA); //printf("%dn", enumB); //system("pause"); //return 0; //} //int Change(int *pX){ //int y = 8; //y = y - *pX; //pX = &y; //return 0; //} // //int main(){ //int xx = 3; //int *pY = &xx; //Change(pY); //printf("%dn", *pY); //system("pause"); //return 0; //} //int main(){ //char arr[2][4]; //strcpy((char *)arr, "you"); //strcpy(arr[1], "me"); //arr[0][3] = '&'; //printf("%sn", arr); //system("pause"); //return 0; //} //int fun(int x){ //int count = 0; //while (x){ //count++; //x = x & (x - 1); //} //return count; //} // //int main(){ //printf("fun(2017)=%dn", fun(2019)); //system("pause"); //return 0; //} //#define CIR(r) r*r //void main(){ //int a = 1; //int b = 2; //int t; //t = CIR(a + b); //printf("%dn", t); //system("pause"); //} //unsigned long g_ulGlobal = 0; //void GlobalInit(unsigned long ulArg){ //ulArg = 0x01; //return; //} // //void main(){ //GlobalInit(g_ulGlobal); //printf("%lu", g_ulGlobal); //system("pause"); //return; //} //int fun(int a, int b){ //if (a > b) //return(a + b); //else //return(a - b); //} // //int main(){ //int x = 3, y = 8, z = 6, r; //r = fun(fun(x, y), 2 * z); //printf("%dn", r); //system("pause"); //return 0; //} //int f(int a){ //int b = 0; //static int c = 3; //a = c++, b++; //return(a); //} // //int main(){ //int a = 2, i, k; //for (i = 0; i < 2; i++){ //k = f(a++); //} //printf("%dn", k); //system("pause"); //return 0; //} //int x = 3; //void inc(){ //static int x = 1; //x *= (x + 1); //printf("%dn", x); //return; //} // //int main(){ //int i; //for (i = 1; i < x; i++){ //inc(); //} //system("pause"); //return 0; //}