计算机三级网络技术50题.doc

50题：#include #include #include #include unsigned char xx5080 ;int maxline = 0 ; /* 文章的总行数 */int ReadDat(void) ;void WriteDat(void) ;void encryptChar()int i,j; /*定义循环控制变量*/int str; /*存储字符串的长度*/char ch; /*存储当前取得的字符*/for(i=0;imaxline;i+) /*以行为单位获取字符*/ str=strlen(xxi); /*求得当前行的字符串长度*/ for(j=0;jstr;j+) /*依次取每行的所有字符*/ ch=xxij*11%256; if(xxij%2=0 | ch=32) continue; /*如果原字符的ASCII值是偶数或计算后的值小于等于32，则该字符不变*/ else xxij=ch; /*否则将所对应的字符进行替代*/ void main() system(CLS); if(ReadDat() printf(数据文件ENG50.IN不能打开!n007) ; return ; encryptChar() ; WriteDat() ;int ReadDat(void) FILE *fp; int i= 0; unsigned char *p ; if (fp = fopen(ENG50.IN,r) =NULL) return 1 ; while(fgets(xxi, 80, fp) !=NULL) p = strchr(xxi, n) ; if(p) *p = 0 ; i+ ; maxline = i ; fclose(fp) ; return 0 ;void WriteDat(void) FILE *fp; int i ; fp = fopen(PS50.DAT, w) ; for(i = 0 ; i maxline ; i+) printf(%sn, xxi) ; fprintf(fp, %sn, xxi); fclose(fp) ;51题#include #include #include #include unsigned char xx5080 ;int maxline = 0 ; /* 文章的总行数 */int ReadDat(void) ;void WriteDat(void) ;void encryptChar()int i,j; /*定义循环控制变量*/int str; /*存储字符串的长度*/char ch; /*存储当前取得的字符*/for(i=0;imaxline;i+) /*以行为单位获取字符*/ str=strlen(xxi); /*求得当前行的字符串长度*/ for(j=0;jstr-1;j+) /*依次取每行的所有字符*/ ch=xxij*11%256; if(ch=0 & ch=9) ) continue; /*如果计算后的值小于等于32或f(p)对应的字符是数字0至9，则该字符不变*/ else xxij=ch; /*否则按给定的替代关系进行替代*/ void main() system(CLS); if(ReadDat() printf(数据文件ENG51.IN不能打开！n007) ; return ; encryptChar() ; WriteDat() ;int ReadDat(void) FILE *fp; int i=0 ; unsigned char *p ; if(fp = fopen(ENG51.IN, r) =NULL) return 1 ; while(fgets(xxi, 80, fp) !=NULL) p = strchr(xxi, n) ; if(p) *p = 0; i+ ; maxline = i ; fclose(fp) ; return 0 ;void WriteDat(void) FILE *fp ; int i ; fp = fopen(PS51.DAT, w) ; for(i = 0 ; i maxline ; i+) printf(%sn, xxi) ; fprintf(fp, %sn, xxi) ; fclose(fp) ;52题#include #include #include #include unsigned char xx5080 ;int maxline = 0 ; /* 文章的总行数 */int ReadDat(void) ;void WriteDat(void) ;void encryptChar() int i,j; /*定义循环控制变量*/int str; /*存储字符串的长度*/char ch; /*存储当前取得的字符*/for(i=0;imaxline;i+) /*以行为单位获取字符*/ str=strlen(xxi); /*求得当前行的字符串长度*/ for(j=0;j=a & ch=z) | ch=32) /*如果计算后的值小于等于32或对应的字符是小写字母*/ continue; else xxij=ch; /*否则用新字符来替代这个字符*/ void main() system(CLS); if(ReadDat() printf(数据文件ENG52.IN不能打开！n007) ; return ; encryptChar() ; WriteDat() ;int ReadDat(void) FILE *fp; int i = 0 ; unsigned char *p ; if(fp = fopen(ENG52.IN, r) =NULL) return 1 ; while(fgets(xxi, 80, fp) !=NULL) p = strchr(xxi,n) ; if(p) *p = 0; i+ ; maxline = i ; fclose(fp) ; return 0 ;void WriteDat(void) FILE *fp ; int i ; fp = fopen(PS52.DAT, w) ; for (i = 0 ; i maxline ; i+) printf(%sn, xxi) ; fprintf(fp, %sn, xxi) ; fclose(fp) ;53题#include#include#include#includeunsigned char xx5080;int maxline=0;int ReadDat(void);void WriteDat(void);void encryChar() int i,j; /*定义循环控制变量*/int str; /*存储字符串的长度*/char ch; /*存储当前取得的字符*/for(i=0;imaxline;i+) /*以行为单位获取字符*/ str=strlen(xxi); /*求得当前行的字符串长度*/ for(j=0;j= A& xxij=Z)| ch=32) /*如果原字符是大写字母或计算后的值小于等于32*/ continue; /*则此字符不变，取下一个字符*/ else xxij=ch; /*如果不满足条件，则用新字符替代原字符*/ void main() system(CLS); if(ReadDat() printf(数据文件ENG53.IN不能打开!n007); return; encryChar(); WriteDat();int ReadDat(void) FILE *fp; int i=0; unsigned char *p; if(fp=fopen(ENG53.IN,r)=NULL) return 1; while(fgets(xxi,80,fp)!=NULL) p=strchr(xxi,n); if(p) *p=0; i+; maxline=i; fclose(fp); return 0;void WriteDat() FILE *fp; int i; fp= fopen(ps53.dat,w); for(i=0;imaxline;i+) printf(%sn,xxi); fprintf(fp,%sn,xxi); fclose(fp);54题#include#include#include#includeunsigned char xx5080;int maxline=0;int ReadDat(void);void WriteDat(void);void encryChar() int i,j; /*定义循环控制变量*/int str; /*存储字符串的长度*/char ch; /*存储当前取得的字符*/for(i=0;imaxline;i+) /*以行为单位获取字符*/ str=strlen(xxi); /*求得当前行的字符串长度*/ for(j=0;jstr;j+) /*依次取每行的所有字符*/ ch=xxij*13%256; if(ch=32) | (ch%2=0) /*如果计算后的值小于等于32或其ASCII值是偶数*/ continue; /*则该字符不变，去取下一个字符*/ else xxij=ch; /*否则将新字符替代原字符*/ void main() system(CLS); if(ReadDat() printf(数据文件ENG54.IN不能打开!n007); return; encryChar(); WriteDat();int ReadDat(void) FILE *fp; int i=0; unsigned char *p; if(fp=fopen(ENG54.IN,r)=NULL) return 1; while(fgets(xxi,80,fp)!=NULL) p=strchr(xxi,n); if(p) *p=0; i+; maxline=i; fclose(fp); return 0;void WriteDat() FILE *fp; int i; fp= fopen(ps54.dat,w); for(i=0;imaxline;i+) printf(%sn,xxi); fprintf(fp,%sn,xxi); fclose(fp);55题#include#include#include#includeunsigned char xx5080;int maxline=0;int ReadDat(void);void WriteDat(void);void encryChar() int i,j; /*定义循环控制变量*/int str; /*存储字符串的长度*/char ch; /*存储当前取得的字符*/for(i=0;imaxline;i+) /*以行为单位获取字符*/ str=strlen(xxi); /*求得当前行的字符串长度*/ for(j=0;jstr;j+) ch=xxij*11%256; /*依次取各行的所有字符*/ if(ch=A & ch=Z) /*如果计算的值小于等于32或对应的字符是大写字母*/ continue; /*则不作改变*/ else xxij=ch; /*否则用新字符取代原有字符*/ void main() system(CLS); if(ReadDat() printf(数据文件ENG55.IN不能打开!n007); return; encryChar(); WriteDat();int ReadDat(void) FILE *fp; int i=0; unsigned char *p; if(fp=fopen(ENG55.IN,r)=NULL) return 1; while(fgets(xxi,80,fp)!=NULL) p=strchr(xxi,n); if(p) *p=0; i+; maxline=i; fclose(fp); return 0;void WriteDat() FILE *fp; int i; fp= fopen(ps55.dat,w); for(i=0;imaxline;i+) printf(%sn,xxi); fprintf(fp,%sn,xxi); fclose(fp);56题#include#include#include#includeunsigned char xx5080;int maxline=0;int ReadDat(void);void WriteDat(void);void encryChar() int i,j; /*定义循环控制变量*/int str; /*存储字符串的长度*/char ch; /*存储当前取得的字符*/for(i=0;imaxline;i+) /*以行为单位获取字符*/ str=strlen(xxi); /*求得当前行的字符串长度*/ for(j=0;j=a & xxij=z) | ch=32) /*如果原字符是小写字母或计算后的值小于等于32*/ continue; /*则不做改变，指向下一个字符*/ else xxij=ch; /*否则用新字符取代原有字符*/ void main() system(CLS); if(ReadDat() printf(数据文件ENG56.IN不能打开!n007); return; encryChar(); WriteDat();int ReadDat(void) FILE *fp; int i=0; unsigned char *p; if(fp=fopen(ENG56.IN,r)=NULL) return 1; while(fgets(xxi,80,fp)!=NULL) p=strchr(xxi,n); if(p) *p=0; i+; maxline=i; fclose(fp); return 0;void WriteDat() FILE *fp; int i; fp= fopen(ps56.dat,w); for(i=0;imaxline;i+) printf(%sn,xxi); fprintf(fp,%sn,xxi); fclose(fp);57题#include#include#include#includeunsigned char xx5080;int maxline=0;int ReadDat(void);void WriteDat(void);void encryChar() int i,j; /*定义循环控制变量*/int str; /*存储字符串的长度*/char ch; /*存储当前取得的字符*/for(i=0;imaxline;i+) /*以行为单位获取字符*/ str=strlen(xxi); /*求得当前行的字符串长度*/ for(j=0;j=0 & xxij=9) | ch=32) /*如果原字符是数字字符0至9或计算后的值小于等于32*/ continue; /*则不做改变，指向下一个字符*/ else xxij=ch; /*否则用新字符取代原有字符*/ void main() system(CLS); if(ReadDat() printf(数据文件ENG57.IN不能打开!n007); return; encryChar(); WriteDat();int ReadDat(void) FILE *fp; int i=0; unsigned char *p; if(fp=fopen(ENG57.IN,r)=NULL) return 1; while(fgets(xxi,80,fp)!=NULL) p=strchr(xxi,n); if(p) *p=0; i+; maxline=i; fclose(fp); return 0;void WriteDat() FILE *fp; int i; fp= fopen(ps57.dat,w); for(i=0;imaxline;i+) printf(%sn,xxi); fprintf(fp,%sn,xxi); fclose(fp);58题#include#include#include#includeunsigned char xx5080;int maxline=0;int ReadDat(void);void WriteDat(void);void encryChar() int i,j; /*定义循环控制变量*/int str; /*存储字符串的长度*/char ch; /*存储当前取得的字符*/for(i=0;imaxline;i+) /*以行为单位获取字符*/ str=strlen(xxi); /*求得当前行的字符串长度*/ for(j=0;jstr;j+) /*依次取每行的所有字符*/ ch=xxij*11%256; if(ch=32 | ch%2!=0) /*如果计算后的值小于等于32或其ASCII值是奇数*/ continue; /*则不做改变，指向下一个字符*/ xxij=ch; /*否则用新字符取代原有字符*/ void main() system(CLS); if(ReadDat() printf(数据文件ENG58.IN不能打开!n007); return; encryChar(); WriteDat();int ReadDat(void) FILE *fp; int i=0; unsigned char *p; if(fp=fopen(ENG58.IN,r)=NULL) return 1; while(fgets(xxi,80,fp)!=NULL) p=strchr(xxi,n); if(p) *p=0; i+; maxline=i; fclose(fp); return 0;void WriteDat() FILE *fp; int i; fp= fopen(ps58.dat,w); for(i=0;imaxline;i+) printf(%sn,xxi); fprintf(fp,%sn,xxi); fclose(fp);59题#include#include#includechar xx5080;int maxline=0;int ReadDat(void);void WriteDat(void);void CovertCharD() int i,j; /*定义循环控制变量*/int str; /*存储字符串的长度*/for(i=0;imaxline;i+) /*逐行获取字符串*/ str=strlen(xxi); /*求得各行的字符长度*/ for(j=0;j=a& xxij=z) /*如果是小写字符，只对小写字符进行处理*/ if(xxij=a) xxij=z; /*如果是小写字母a，就改成字母z*/ else xxij-=1; /*其余的改成该字母的上一个字母*/void main() system(CLS); if(ReadDat() printf(数据文件IN59.DAT不能打开n007); return; CovertCharD(); WriteDat();int ReadDat() FILE *fp; int i=0; char *p; if(fp=fopen(IN59.DAT,r)=NULL) return 1; while(fgets(xxi,80,fp)!=NULL) p=strchr(xxi,n); if(p) *p=0; i+; maxline=i; fclose(fp); return 0;void WriteDat(void ) FILE *fp; int i; system(CLS); fp=fopen(OUT59.DAT,w); for(i=0;imaxline;i+) printf(%sn,xxi); fprintf(fp,%sn,xxi); fclose(fp);60题#include#include#include#include#define N 81void readwriteDAT();void chg(char *s) while(*s) /*若当前字符不是字符串结束符，则循环一直进行*/if(*s=z|*s=Z) /*将当前字母是z或者Z*/*s-=25; /*则分别将其改成a或A*/s+; /*取下一个字母*/else if(*s=a& *s=A& *s=Y) /*若是大写字母,则改成该字母的下一个字母*/*s+=1;s+; /*取下一个字母*/else s+; /*取下一个字母*/void main() char aN; system(CLS); printf(Enter a string:); gets(a); printf(The original string is :); puts(a); chg(a); printf(The string after modified :); puts(a); readwriteDAT();void readwriteDAT() int i; char aN; FILE *rf,*wf; rf=fopen(in60.dat,r); wf=fopen(out60.dat,w); for(i=0;i10;i+) fgets(a,81,rf); chg(a); fprintf(wf,%s,a); fclose(rf); fclose(wf);61题#include#include#includechar xx5080 ;int maxline = 0 ; /* 文章的总行数 */int ReadDat(void) ;void WriteDat(void) ;void StrCharJR(void)int i,j; /*定义循环控制变量*/int str; /*存储字符串的长度*/for(i=0;imaxline;i+) /*以行为单位获取字符*/ str=strlen(xxi); /*求得当前行的字符串长度*/ for(j=0;j4; /*字符的ASCII值右移4位再加上原字符的ASCII值，得到新字符*/void main() system(CLS); if(ReadDat() printf(数据文件IN62.DAT不能打开!n007) ; return ; StrCharJR() ; WriteDat() ;int ReadDat(void) FILE *fp; int i= 0; char *p ; if (fp = fopen(IN62.DAT,r) =NULL) return 1 ; while(fgets(xxi, 80, fp) !=NULL) p = strchr(xxi, n) ; if(p) *p = 0 ; i+ ; maxline = i ; fclose(fp) ; return 0 ;void WriteDat(void) FILE *fp; int i ; system(CLS); fp = fopen(OUT62.DAT, w) ; for(i = 0 ; i maxline ; i+) printf(%sn, xxi) ; fprintf(fp, %sn, xxi) ; fclose(fp) ;62题#include#include#includechar xx5080 ;int maxline = 0 ; /* 文章的总行数 */int ReadDat(void) ;void WriteDat(void) ;void StrCharJR(void)int i,j; /*定义循环控制变量*/int str; /*存储字符串的长度*/for(i=0;imaxline;i+) /*以行为单位获取字符*/ str=strlen(xxi); /*求得当前行的字符串长度*/ for(j=0;j4; /*字符的ASCII值右移4位再加上原字符的ASCII值，得到新字符*/void main() system(CLS); if(ReadDat() printf(数据文件IN62.DAT不能打开!n007) ; return ; StrCharJR() ; WriteDat() ;int ReadDat(void) FILE *fp; int i= 0; char *p ; if (fp = fopen(IN62.DAT,r) =NULL) return 1 ; while(fgets(xxi, 80, fp) !=NULL) p = strchr(xxi, n) ; if(p) *p = 0 ; i+ ; maxline = i ; fclose(fp) ; return 0 ;void WriteDat(void) FILE *fp; int i ; system(CLS); fp = fopen(OUT62.DAT, w) ; for(i = 0 ; i maxline ; i+) printf(%sn, xxi) ; fprintf(fp, %sn, xxi) ; fclose(fp) ;63题#include#include#includechar xx5080;int maxline=0;int ReadDat(void);void WriteDat(void);void StrCharJL(void) int i,j; /*定义循环控制变量*/int str;char ch;for(i=0;imaxline;i+) /*以行为单位获取字符*/ str=strlen(xxi); /*求得当前行的字符串长度*/ for(j=0;jstr;j+) ch=xxij; if(ch4 =32 | ch100) continue; /*如果左移4位后字符的ASCII值小于等于32或大于100，则原字符保持不变*/ else xxij+=ch4; /*否则就把左移后的字符ASCII值加上原字符的ASCII*/ void main() system(CLS); if(ReadDat() printf(数据文件IN63.DAT不能打开n007); return; StrCharJL(); WriteDat();int ReadDat(void) FILE *fp; int i=0; char *p; if(fp=fopen(IN63.DAT,r)=NULL) return 1; while(fgets(xxi,80,fp)!=NULL) p=strchr(xxi,n); if(p) *p=0; i+; maxline=i; fclose(fp); return 0;void WriteDat(void ) FILE *fp; int i; system(CLS); fp=fopen(OUT63.DAT,w); for(i=0;imaxline;i+) p