有以下程序,执行后输出结果是()。#include int a=2;int f(int *a){return (*a)++;}int main(){int s=0;{int a=5;s+=f(&a);printf("%d\n",a);}s+=f(&a);printf("%d\n",a);printf("%d\n",s);return 0;}
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若有定义:int a,b,*p,*q;p=&a;q=&b;q=p;a=30*3;b=60-20;printf("%d",*q);那么输出的结果是:
A. 30
B. 40
C. 60
D. 90
以下程序的运行结果是()。#include int main(){int a[]={1,2,3,4,5,6,7,8,9,10,11,12};int *p=a+5,*q=NULL;*q=*(p+5);printf("%d %d\n",*p,*q);return 0;}
A. 运行后报错
B. 6 6
C. 6 12
D. 5 5
以下程序的输出结果是()。#include int main(){char *alpha[6]={"ABCD","EFGH","IJKL","MNOP","QRST","UVWX"};char **p;int i;p=alpha;for(i=0;i<4;i++)printf("%s",p[i]);printf("\n");return 0;}
ABCDEFGHIJKL
B. ABCD
C. ABCDEFGHIJKLMNOP
D. AEIM
设有以下语句:char str1[]="string",str2[8],*str3,str4[]="";则下面选项()不是对库函数strcpy()的正确调用,此库函数用于复制字符串。
A. strcpy(str1,"HELLO1");
B. strcpy(str2,"HELLO2");
C. strcpy(str3,"HELLO3");
D. strcpy(str4,"HELLO4");