时间:2011-12-25 00:01:50
第12套题
一、程序填空题
#include <stdio.h>
void fun(char *s)
{ int i, j=0, k=0; char t1[80], t2[80];
for(i=0; s[i]!=' '; i++)
if(s[i]>='0' && s[i]<='9')
{
/**********found**********/
t2[j]=s[i]; ___1___;
}
else t1[k++]=s[i];
t2[j]=0; t1[k]=0;
/**********found**********/
for(i=0; i<k; i++) ___2___;
/**********found**********/
for(i=0; i<___3___; i++) s[k+i]=t2[i];
}
main()
{ char s[80]="def35adh3kjsdf7";
printf("nThe original string is : %sn",s);
fun(s);
printf("nThe result is : %sn",s);
}
二、程序改错题
#include <stdio.h>
#include <string.h>
#define MAXLINE 20
fun ( char *pstr[6])
{ int i, j ;
char *p ;
for (i = 0 ; i < 5 ; i++ ) {
/**************found**************/
for (j = i + 1, j < 6, j++)
{
if(strcmp(*(pstr + i), *(pstr + j)) > 0)
{
p = *(pstr + i) ;
/**************found**************/
*(pstr + i) = pstr + j ;
*(pstr + j) = p ;
}
}
}
}
main( )
{ int i ;
char *pstr[6], str[6][MAXLINE] ;
for(i = 0; i < 6 ; i++) pstr[i] = str[i] ;
printf( "nEnter 6 string(1 string at each line): n" ) ;
for(i = 0 ; i < 6 ; i++) scanf("%s", pstr[i]) ;
fun(pstr) ;
printf("The strings after sorting:n") ;
for(i = 0 ; i < 6 ; i++) printf("%sn", pstr[i]) ;
}
三、程序编写题
#include <stdio.h>
#include <string.h>
#define M 81
int fun(char *ss, char c)
{
}
main()
{ char a[M], ch;
void NONO ( );
printf("nPlease enter a string:"); gets(a);
printf("nPlease enter a char:"); ch = getchar();
printf("nThe number of the char is: %dn", fun(a, ch));
NONO ( );
}
void NONO ( )
{/* 本函数用于打开文件，输入测试数据，调用fun函数，输出数据，关闭文件。*/
int i ;
FILE *rf, *wf ;
char a[M], b[M], ch ;
rf = fopen("K:\k01\24010001\in.dat","r") ;
wf = fopen("K:\k01\24010001\out.dat","w") ;
for(i = 0 ; i < 10 ; i++) {
fscanf(rf, "%s", a) ;
fscanf(rf, "%s", b) ;
ch = *b ;
fprintf(wf, "%c=%dn", ch, fun(a, ch)) ;
}
fclose(rf) ;
fclose(wf) ;
}