国家计算机二级考试 C语言上机100题

1：

填空题：

#include

#include

#define N 5

#define M 10

/**********found**********/ void fun(char (*ss) [M], int k) { int i=0 ;

/**********found**********/ while(i< N) {

/**********found**********/

ss[i][k]=0; i++; }

}

main()

{ char x[N][M]={"Create","Modify","Sort", "skip","Delete"};

int i;

printf("\nThe original string\n\n"); for(i=0;i

printf("\n");

fun(x,4);

printf("\nThe string after deleted :\n\n");

for(i=0; i

}

改错题：

#include

#include

double fun(double eps)

{ double s,t; int n=1;

s=0.0;

/************found************/ 原t=0; 改为t=1;

while( t>eps)

{ s+=t;

t=t * n/(2*n+1);

n++;

}

/************found************/ 原return (s); 改为return(2*s);

}

main()

{ double x;

printf("\nPlease enter a precision: "); scanf("%lf",&x);

printf("\neps=%lf,

Pi=%lf\n\n",x,fun(x));

}

编程题：

#include

void fun( char *a, int n )

{

/* 以下代码仅供参考*/

int i=0,j,k=0;

while(a[k]=='*') k++; /* k为统计

*字符个数*/

if(k>n)

{

i=n;j=k;

/* 以下完成将下标为k至串尾

的字符前移k-n个位置*/

for(; a[j] !=0 ; j++)

a[i++]=a[j];

a[i] = 0;

}

}

main()

{ char s[81]; int n;

printf("Enter a string:\n");gets(s);

printf("Enter n :

");scanf("%d",&n);

fun( s,n );

printf("The string after

deleted:\n");puts(s);

NONO();

}

2：

填空题：

#include

#include

#define N 5

typedef struct

{ int num;

char name[10];

char tel[10];

}STYPE;

void check();

/**********found**********/

int fun(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; i

/**********found**********/

fwrite(&std[i],

sizeof(STYPE), 1, fp);

fclose(fp);

return (1);

}

main()

{ STYPE

s[10]={ {1,"aaaaa","111111"},{1,"bb

bbb","222222"},{1,"ccccc","333333"

},

{1,"ddddd","444444"},{1,"eeeee","5

55555"}};

int k;

k=fun(s);

if (k==1)

{ printf("Succeed!");

check(); }

else

printf("Fail!");

}

void check()

{ FILE *fp; int i;

STYPE s[10];

if((fp=fopen("myfile5.dat","rb"))==N

ULL)

{ printf("Fail !!\n"); exit(0); }

printf("\nRead file and output to

screen :\n");

printf("\n num name

tel\n");

for(i=0; i

{ fread(&s[i],sizeof(STYPE),1,

fp);