更多"有以下程序 #include<stdio.h> sub1(char a"的相关试题:
[单项选择]下列程序的输出结果是______。
#include
sub1(char a,char b) char c; c=a;a=b;b=c;
sub2(char* a,char b) char c; c=*a;*a=b;b=c;
sub3(char* a,char*b) char c; c=*a;*a=*b;*b=c;
char a,b;
a=’A’ ;b=’B’; sub3 (&a, &b) ;putchar (a) ;putchar (b);
a=’A’;b=’B’;sub2(&a,b);putchar(a);prtchar(b);
a=’A’;b=’B’;sub1(a,b);putchar(a) ;putchar(b);
A. BABBAB
B. ABBBBA
C. BABABA
D. BAABBA
[单项选择]有以下程序 #include<stdio.h> sub1(char a,char B) {char c;c=a;a=b;b=c;} sub2(char *a,char B) {char c;c=*a;*a=b;b=c;} sub3(char *a,char *B) {char c;c=*a;*a=*b;*b=c;} main( ) { cha,a,b; a=’A’;b=’B’;sub3(&a,&b) putchar(a);putchar(b); a=’A’;b=’B’;sub2(&a,b) ;putchar(a);putchar(b); a=’A’;b=’B’;sub1(a,b) ;putchar(a);putchar(b); } 程序运行后的输出结果是 ( )
A. BABBAB
B. ABBBBA
C. BABABA
D. BAABBA
[单项选择]有以下程序
#include
#include
typedef struct {char name[9]; char sex; int score[2]; } STU;
STU f(STU a)
{ STU b={"Zhao",’m’,85,90};
int i;
strcpy(a.name,b.name);
a.sex=b.sex;
for(i=0;i<2;i++) a.score[i]=b. score[i];
return a;
}
main( )
{ STU c={"Qian",’f’,95,92}, d;
d=f(c);
printf("%s,%c,%d,%d,",d.name, d.sex, d.score[0], d.score[1]);
printf("%s,%c,%d,%d/n",c.name, c.sex, c.score[0], c.score[1]);
}
程序运行后的输出结果是_______。
A. Zhao,m,85,90,Qian,f,95,92
B. Zhao,m,85,90, Zhao,m,85,90
C. Qian,f,95,92, Qian,f,95,92
D. Qian,f,95,92, Zhao,m,85,90
[填空题]
有以下程序
#include
#include
void fun(char *str)
{ char temp;int n,i;
n=strlen(str);
temp=str[n-1];
for(i=n-1;i>0;i--) str[i]=str[i-1];
str[0]=temp;
}
main( )
{ char s[50];
scanf("%s",s); fun(s); printf("%s/n",s);}
程序运行后输入:abcdef<回车>,则输出结果是 () 。
[单项选择]有以下程序
#include
#include
void fun(char *w, int m)
{ char s, *p1, *p2;
p1=w; p2=w+m-1;
while(p1A. 654321
B. 116611
C. 161616
D. 123456
[单项选择]
有以下程序:
# include
void f(char *s, char *t)
{ char k; k=*s; *s=*t; *t=k; }
main( )
{ char str[10]="abcdefg", *p
p=str+strlen(str)/2+1;
f(p, p-2); printf("%s/n",str); }
程序运行后的输出结果是()。
A. abcdefg
B. gfedcba
C. gbcdefa
D. abedcfg
[单项选择]有以程序
#include
#include
typedef struct char name[9]; char sex; float score[2]; STU;
void f( STU a)
STU b="Zhao",’m’,85.0,90.0; int i;
strcpy(a.name,b.name);
a.sex=b.sex;
for(i=0;i<2;i++) a.score[i]=b.score[i];main( )
STU c="Qian",’f’,95.0,92.0;
f(C); printf("%s,%c,%2.0f,%2.0f/n",c.name,c.sex,c.score[0],c.score[1]);程序的运行结果是______。
A. Qian,f,95,92
B. Qian,m,85,90
C. Zhao,f,95,92
D. Zhao,m,85,90
[单项选择]下列程序输出的结果是( )。
#include<stdio.h>
sub1(char a,char b) char c;c=a;a=b;b=c:
sub2(char*a,charb) charc;c=*a;”a=b:b=c;
sub3(char*a,char*b) char c;c=*a;”a=*b;*b=c:
void main( )
char a,b;
a=’A’;b=’B’;sub1(a,b);putchar(a);putchar(b);
a=’A’;b=’B’;sub2(&a,b);putchar(a);putchar(b);
a=’A’;b=’B’;sub3(&a,&b);putchar(a);putchar(b):
putchar(’/n’);
A. ABABAB
B. ABBBBA
C. ABBABA
D. ABABBA
[单项选择]下列程序输出的结果是( )。
#include <stdio.h>
sub1(char a,char b)char c;c=a;a=b;b=c;
sub2(char*a,char b)char c;c=*a;*a=b;b=c;
sub3(char*a,char*b) char c;c=*a;*a=*b;*=c;
void main( )
char a,b;
a='A';b='B'; sub1(a,b);putchar(a);putchar(b);
a='A';b='B'; sub2(&a,b);putchar(a);putchar(b);
a='A';b='B'; sub3(&a,&b);putchar(a);putchar(b);
putchar('/n');
A. BABBAB
B. ABBBBA
C. ABBABA
D. ABABBA
[单项选择]有以下程序
#include
struct STU{char name[9]; char sex; int score[2];};
void f(struct STU a[])
{ struct STU b = {"Zhao", ’m’, 85, 90};
a[1] = b;
}
main( )
{ struct STU c[2] = {{"Qian", ’f’, 95, 92}, {"Sun", ’m’, 98, 99}};
f(c);
printf("%s,%c,%d,%d,", c[0].name, c[0].sex, c[0].score[0], c[0].score[1]);
printf("%s,%c,%d,%d,", c[1].name, c[1].sex, c[1].score[0], c[1].score[1]);
}
程序运行后输出结果是
A. Zhao,m,85,90,Sun,m,98,99
B. Zhao,m,85,90,Qian,f,95,92
C. Qian,f,95,92,Sun,m,98,99
D. Qian,f,95,92,Zhao,m,85,90
[单项选择]有以下程序:
#include
void WriteStr(char *fn,char*str)
FILE*fp;
fp=fopen(fn,"w");fputs(str,fp);fclose(fp);
main( )
WriteStr("t1.dat","start");
WriteStr("t1.dat","end");
程序运行后,文件t1.dat中的内容是______。
A. start
B. end
C. startend
D. endrt
[单项选择]有以下程序
#include
#include
void fun(char *s[ ],int n)
char *t; int i,j;
for(i=0; i<N-1;&NBSP;i++)&NBSP;
for(j=i+1; j<N;&NBSP;j++)&NBSP;
if(strlen(s[i])>strlen(s[j])) t=s[i]; s[i]=s[j]; s[j]=t;main( )
char *ss[]="bcc","bbcc","xy","aaaacc","aabcc";
fun(ss,5); printf("%s,%s/n",ss[0],ss[4]);程序的运行结果是______。
A. xy,aaaacc
B. aaaacc,xy
C. bcc,aabcc
D. aabcc,bcc
[单项选择]有以下程序
#include
#include
main( )
{ char a[5][10]={ "china","beijing","you","tiananmen","welcome"};
int i,j; char t[10];
for(i=0;i<4;i++)
for(j=i+1;j<5;j++)
if(strcmp(a[i],a[j])>0)
{strcpy(t,a[i]); strcpy(a[i],a[j]); strcpy(a[j],t);}
puts(a[3]);
}
程序运行后的输出结果是_______。
A. beijing
B. china
C. welcome
D. tiananmen
[填空题]
以下程序运行时输出结果是()。
#include
#include
int count(char s[])
{ int i=0;
if(s[i]==’/0’) return 0;
while(isalpha(s[i]))i++;
while(!isalpha(s[i])&&s[i]!=’/O’)i++;
return 1+count(&s[i]);
}
void main( )
{char line[]="one world,one dream.";
printf("%d",count(line));
}
[单项选择]有以下程序:
#include
struct STU
{char name[10];
int num;
};
void f(char *name, int num)
{ struct STU s[2]={{"SunDan",20044},{"Penghua",20045}};
num=s[0].num;
strcpy(name,s[0].name);
}
main( )
{ struct STU s[2]={{"YangSan",20041},{"LiSiGao",20042}},*p;
p=&s[1]; f(p->name,p->num);
printf("%s %d/n",p->name,p->num);
}
程序运行后的输出结果是______。
A. SunDan 20042
B. SunDan 20044
C. LiSiGuo 20042
D. YangSan 20041
[简答题]
阅读下列程序,并回答问题: #include substr(char*t,char*s,int pos,int len) { while(len>0&&*s) { *t=*(s+pos-l); t++;s++;len--; } *t=’/0’; } char *f31(char*s) { char t[100]; if (strlen(s)=1) return s; substr(t,s,1,1); substr(s,s,2,strlen(s)-1); f31(s); return strcat(s,t); } main( ) { char str[100]= ’’String’’; printf(’’%s/n’’,f31(str)); }
简述函数f31的功能。