二级C语言50题库(简洁背诵复习版)[1]1.doc

第1套题一、程序填空题#include #include #define N 5typedef struct int num; Char name 10; char tell10;STYPE;void check();填空答案：（1）STYPE （2）FILE （3）fp/*found*/int fun(STYPE STYPE *std)/*found*/ FILE *fp; int i; if(fp=fopen(myfile5.dat,wb)=NULL) return(0); printf(nOutput data to file !n); for(i=0; iN; i+)/*found*/ fwrite(&stdi, sizeof(STYPE), 1,fp); fclose(fp); return (1); 二、程序改错题#include #include void fun (char *s, char *t) int i, sl;参考答案：(1) for(i=0;isl;i+) (sl是字母l不是数字1) (2) t2*sl=0或tsl+sl=0 sl = strlen(s);/*found*/ for( i=0; i=sl; i +) ti = si; for (i=0; isl; i+)tsl+i = ssl-i-1;/*found*/ tsl+sl = 0;三、程序编写题 （对应题库88套编程题-特殊方法练习）第2套题一、程序填空题/*found*/void WriteText(FILE *fw) char str81; printf(nEnter string with -1 to end :n); gets(str);参考答案：(1) *fw (2) str (3) str while(strcmp(str,-1)!=0) /*found*/ fputs(str,fw); fputs(n,fw); gets(str); void ReadText(FILE *fr) char str81; printf(nRead file and output to screen :n); fgets(str,81,fr); while( !feof(fr) ) /*found*/ printf(%s,str); fgets(str,81,fr); 二、程序改错题#include /*found*/void fun (long s, long t) long sl=10; *t = s % 10;参考答案：(1) void fun(long s,long *t)(2) s1=s1*10; while ( s 0) s = s/100; *t = s%10 * sl + *t;/*found*/S1=s1*10; 三、程序编写题 （对应教材33题特殊方法练习）第3套题一、程序填空题#include #include int fun(char *fname ) FILE *fp; int i,n; float x; if(fp=fopen(fname, w)=NULL) return 0; for(i=1;i=10;i+)/*found*/参考答案（1）fp（2）fclose(fp)（3）myfile3.txt fprintf(_1_,%d %fn,i,sqrt(double)i); printf(nSucceed!！n);/*found*/ _2_; printf(nThe data in file :n);/*found*/ if(fp=fopen(_3_,r)=NULL) return 0; fscanf(fp,%d%f,&n,&x); while(!feof(fp) printf(%d %fn,n,x); fscanf(fp,%d%f,&n,&x); fclose(fp); return 1;二、程序改错题#include #include void fun ( int n, int *a )参考答案（1）for(i=j+1;in;i+) （2）p=i; int i, j, p, t; for ( j = 0; jn-1 ; j+ ) p = j;/*found*/ for ( i=j+1; iai )/*found*/ t=i; if ( p!=j ) t = aj; aj = ap; ap = t; 三、程序编写题 （对应题库96套编程题特殊方法练习）第4套题一、程序填空题#include #include int fun(char *source, char *target) FILE *fs,*ft; char ch;参考答案：（1）r （2）fs （3）ft/*found*/ if(fs=fopen(source, _1_)=NULL) return 0; if(ft=fopen(target, w)=NULL) return 0; printf(nThe data in file :n); ch=fgetc(fs);/*found*/ while(!feof(_2_) putchar( ch );/*found*/ fputc(ch,_3_); ch=fgetc(fs); fclose(fs); fclose(ft); printf(nn); return 1;二、程序改错题#include void fun (long s, long *t) int d; long sl=1; *t = 0; while ( s 0) d = s%10;参考答案：（1）if (d%2=0)（2） s/=10;/*found*/ if (d%2=0) *t=d* sl+ *t; sl *= 10; /*found*/ s = 10; 三、程序编写题 （对应题库75套编程题特殊方法练习）第5套题一、程序填空题#include #include #define N 8typedef struct list int data; struct list *next; SLIST;void fun( SLIST *h, int x) SLIST *p, *q, *s; s=(SLIST *)malloc(sizeof(SLIST);/*found*/参考答案：(1)x (2)p (3)s s-data=_1_; q=h; p=h-next; while(p!=NULL & xp-data) /*found*/ q=_2_; p=p-next; s-next=p;/*found*/ q-next=_3_;二、程序改错题#include long fun (long num)参考答案：(1)long k=1;(2)num/=10;/*found*/ long k; do k*=num%10 ;/*found*/ num=10 ; while(num) ; return (k) ;三、程序编写题 （对应题库87套编程题特殊方法练习）第6套题一、程序填空题#include #include #define N 8typedef struct list int data; struct list *next; SLIST;void fun( SLIST *p) SLIST *t, *s; t=p-next; s=p; while(t-next != NULL) s=t;/*found*/参考答案：(1) next (2) t-data (3) t t=t-_1_; /*found*/ printf( %d ,_2_); s-next=NULL;/*found*/ free(_3_);二、程序改错题#include 参考答案：(1) void fun(char *a) (2) print(%c,*a);/*found*/fun (char a) if ( *a ) fun(a+1) ;/*found*/ printf(%c *a) ; 三、程序编写题 （对应题库56套编程题特殊方法练习）第7套题一、程序填空题void fun( SLIST *h) SLIST *p, *q; p=h-next; if (p!=NULL) q=p-next; while(q!=NULL) if (p-data=q-data) p-next=q-next;/*found*/ free(_1_);/*found*/参考答案：(1) q (2) next(3) next q=p-_2_; else p=q;/*found*/ q=q-_3_; 二、程序改错题void fun(int a, int n) int i, j, t, p; for (j = 0 ;j n-1 ;j+) 参考答案：(1)缺分号(2) p = i;/*found*/ p = j for (i = j+1;i n; i+) if(ai next;/*found*/ while(p!=_1_) n+;/*found*/参考答案：（1）0或NULL（2）n (3)head，ch if (p-data=ch) return _2_; else p=p-next; return 0;main() SLIST *head; int k; char ch; char aN=m,p,g,a,w,x,r,d; head=creatlist(a); outlist(head); printf(Enter a letter:); scanf(%c,&ch);/*found*/ k=fun(_3_); if (k=0) printf(nNot found!n); else printf(The sequence number is : %dn,k);二、程序改错题#include #include #include 参考答案：(1) for(i=0,t=0;pi;i+)(2) ct=0;fun ( char *p) int i,t; char c80;/*found*/ For (i = 0,t = 0; pi ; i+) if(!isspace(*(p+i) ct+=pi;/*found*/ ct=0; strcpy(p,c);三、程序编写题 （对应题库86套编程题特殊方法练习）第9套题一、程序填空题void fun( SLIST *h, int *n)参考答案：(1) *n (2) next (3) head SLIST *p;/*found*/ _1_=0; p=h-next; while(p) (*n)+;/*found*/ p=p-_2_; main() SLIST *head; int aN=12,87,45,32,91,16,20,48, num; head=creatlist(a); outlist(head);/*found*/ fun(_3_, &num); printf(nnumber=%dn,num);二、程序改错题char * fun (char *s, char *t ) char *p , *r, *a;参考答案：(1) a=NULL; (2) if(*r=*p)/*found*/ a = Null; while ( *s ) p = s; r = t; while ( *r )/*found*/ if ( r = p ) r+; p+; else break; if ( *r = 0 ) a = s; s+; return a ;三、程序编写题 （对应题库94套编程题特殊方法练习）第10套题一、程序填空题int fun( SLIST *h) SLIST *p; int s=0; p=h-next; while(p)参考答案：(1) data (2) next (3) head /*found*/ s+= p-_1_;/*found*/ p=p-_2_; return s;main() SLIST *head; int aN=12,87,45,32,91,16,20,48; head=creatlist(a); outlist(head);/*found*/ printf(nsum=%dn, fun(_3_);二、程序改错题void fun (char *s, char *t1, char *t2 , char *w) char *p , *r, *a; strcpy( w, s ); while ( *w )参考答案：(1) while(*r) (2) *a=*r;a+;r+; p = w; r = t1;/*found*/ while ( r ) if ( *r = *p ) r+; p+; else break; if ( *r = 0 ) a = w; r = t2; while ( *r )/*found*/ *a = *r; a+; r+ w += strlen(t2) ; else w+; 三、程序编写题 （对应题库85套编程题特殊方法练习）第11套题一、程序填空题int fun(char (*ss)N, int *n)参考答案：(1)M (2) (3)k int i, k=0, len= N;/*found*/ for(i=0; i_1_; i+) len=strlen(ssi); if(i=0) *n=len;/*found*/ if(len _2_ *n) *n=len; k=i; /*found*/ return(_3_);二、程序改错题#include #include char* fun( char tt )参考答案：(1)if(a=tti)&(tti=z) (2)tti-=32; int i; for( i = 0; tti; i+ )/*found*/ if( a = tti )|( tti = z ) )/*found*/ tti += 32; return( tt );三、程序编写题 （对应题库62套编程题记程序 背答案）第12套题一、程序填空题#include void fun(char *s) int i, j=0, k=0; char t180, t280; for(i=0; si!=0; i+) if(si=0 & si=9)参考答案：(1) j+ (2) si=t1i (3) j /*found*/ t2j=si; _1_; else t1k+=si; t2j=0; t1k=0;/*found*/ for(i=0; ik; i+) _2_;/*found*/ for(i=0; i_3_; i+) sk+i=t2i;二、程序改错题#include #include #define MAXLINE 20fun ( char *pstr6) int i, j ; char *p ; for (i = 0 ; i 5 ; i+ ) /*found*/参考答案：(1) for(j = i + 1; j 6; j+) (2) *(pstr + i) =*( pstr + j); for (j = i + 1, j 0) p = *(pstr + i) ;/*found*/ *(pstr + i) = pstr + j ; *(pstr + j) = p ; 三、程序编写题 （对应题库53套编程题特殊方法练习）第13套题一、程序填空题#include void fun(char *s) int i, j, n; for(i=0; si!=0; i+)/*found*/ if(si=0 _1_ sii; j-)/*found*/ sj+1= _3_; sj+1=*; i=i+1; 二、程序改错题#include double fun ( int m )参考答案：（1）for(i=2;i=m;i+)(2) y+=1.0/(i*i); double y = 1.0 ; int i;/*found*/ for(i = 2 ; i m ; i+)/*found*/ y += 1 / (i * i) ; return( y ) ;三、程序编写题 （对应题库81套编程题特殊方法练习）第14套题一、程序填空题#include void fun(char *s, int *t) int i, n; n=0;参考答案：（1）si （2）9(3) *t=n；/*found*/ for(i=0; _1_ !=0; i+)/*found*/ if(si=0&si= _2_ ) n+;/*found*/ _3_ ;二、程序改错题#include 参考答案：(1) t=*x;*x=y; (2) return (t);int fun(int *x,int y) int t ;/*found*/ t = x ; x = y ;/*found*/ return(y) ;三、程序编写题 （对应题库67套编程题记程序 背答案）第15套题一、程序填空题#include void fun(char *s) int i, n, k; char c; n=0; for(i=0; si!=0; i+) n+;/*found*/参考答案：(1) 1 (2) sk (3) c if(n%2=0) k=n-_1_ ; else k=n-2;/*found*/ c=_2_ ; for(i=k-2; i=1; i=i-2) si+2=si;/*found*/ s1=_3_ ;二、程序改错题#include 参考答案：(1) long s = 0,t = 0; (2) t = t / 10;long fun (int a, int n) int j ;/*found*/ long s = 0, t = 1 ; for ( j = 0 ; j n ; j+) t = t * 10 + a ; s = t ; for ( j = 1 ; j n ; j+) /*found*/ t = t % 10 ; s = s - t ; return(s) ;三、程序编写题 （对应题库74套编程题特殊方法练习）第16套题一、程序填空题#include void fun(char *s, char *p) int i, j, n, x, t; n=0; for(i=0; si!=0; i+) n+;参考答案：(1) t=i (2) i (3) 0 for(i=1; in-2; i=i+2) /*found*/ _1_;/*found*/ for(j=_2_+2 ; jsj) t=j; if(t!=i) x=si; si=st; st=x; for(i=1,j=0; in; i=i+2, j+) pj=si;/*found*/ pj=_3_;二、程序改错题#include #include float fun ( float num )参考答案：(1)while(fabs(t)=num) (2) t=s/n; int s ; float n, t, pi ; t = 1 ; pi = 0 ; n = 1 ; s = 1 ;/*found*/ while(t = num) pi = pi + t ; n = n + 2 ; s = -s ;/*found*/ t = s % n ; pi = pi * 4 ; return pi ;三、程序编写题 （对应题库55套编程题特殊方法练习）第17套题一、程序填空题#include void fun(char *s, char c) int i, j, n;/*found*/ for(i=0; si!=_1_ ; i+)参考答案：(1) 0或0 (2) 0 (3) c if(si=c) /*found*/ n=_2_ ; while(si+1+n!=0) n+; for(j=i+n+1; ji; j-) sj+1=sj;/*found*/ sj+1=_3_ ; i=i+1; 二、程序改错题#include double fun ( int x)参考答案：(1) double sum=0.0; (2) sum/=c;/*found*/ int sum = 0.0; int c=0, i=0; while (xi != 0) if (xi 0) sum += xi; c+; i+; /*found*/ sum = c; return sum;三、程序编写题 （对应题库91套编程题背答案）第18套题一、程序填空题#include #define N 4void fun(int (*t)N, int m) int i, j;参考答案：(1) i+ (2) m (3) m /*found*/ for(i=0; i=0; j-)/*found*/ tij+_2_ =tij;/*found*/ for(j=0; j_3_; j+) tij=0; 二、程序改错题#include #include int fun( int high ) int sum = 0, n=0, j, yes;/*found*/ while (high = 2) & (n =2)&(n10) (2) 缺分号 yes = 1; for (j=2; j=high/2; j+ ) if (high % j =0 )/*found*/ yes=0; break if (yes) sum +=high; n+; high-; return sum ;三、程序编写题 （对应题库70套编程题背答案）第19套题一、程序填空题#include #define N 4参考答案：(1)N (2)N-1 (3)0void fun(int (*t)N) int i, j, x;/*found*/ for(i=0; i=1; j-) tij=tij-1;/*found*/ ti_3_=x; 二、程序改错题#include double fun( double q ) int n; double s,t; n = 2; s = 2.0; while (s=q) t=s;参考答案：(1)s=s+(n+1.0)/n; (2)return t;/*found*/ s=s+(n+1)/n; n+; printf(n=%dn,n);/*found*/ return s;三、程序编写题 （对应题库76套编程题背答案）第20套题一、程序填空题#include #define N 4void fun(int (*t)N)参考答案：（1）0 （2）j- （3）j int j ,rN; for(j=0; jN; j+) rj=t0j; for(j=0; jN; j+)/*found*/ t0N-j-1=tj_1_ ; for(j=0; j=0;_2_ ) tN-1N-1-j=tjN-1; for(j=N-1; j=0; j-)/*found*/ tjN-1=r_3_;二、程序改错题#include #include /*found*/f( double x) if (x = 0.0 | x = 2.0) return 0.0;参考答案：(1)double f(double x)(2)缺分号 else if (x 0.0) return (x -1)/(x-2); else return (x +1)/(x-2);double fun( int n ) int i; double s=0.0, y; for (i= -n; i=n; i+) y=f(1.0*i); s += y;/*found*/ return s三、程序编写题 （对应题库89套编程题背答案）第21套题一、程序填空题#include int fun(int x) int n, s1, s2, s3, t;参考答案：(1) 0 (2) x (3) t+ /*found*/ n=_1_; t=100;/*found*/ while(t=_2_) s1=t%10; s2=(t/10)%10; s3=t/100; if(s1+s2+s3=15) printf(%d ,t); n+; /*found*/ _3_; return n;二、程序改错题#include #include void fun (char *s, char *t)参考答案：(1) int i,s1; (2) ti=ss1-1-i; /*found*/ int i; sl = strlen(s); for (i=0; isl; i+)/*found*/ ti = ssl-i; for (i=0; isl; i+) tsl+i = si; t2*