郑州大学c语言实验报告册答案(全部)

实验一

1.

#include

void main()

{

int a,b,c;

scanf("%d,%d,%d",&a,&b,&c);

printf("sum=%d\n",a+b+c);

}

2.

#include

void main()

{

int a,b,he,cha,ji,shang;

scanf("%d,%d",&a,&b);

he=a+b;

cha=a-b;

ji=a*b;

shang=a/b;

printf("he=%d\n",he);

printf("cha=%d\n",cha);

printf("ji=%d\n",ji);

printf("shang=%d\n",shang);




}

3.

#include

void main()

{

int a,b,c,d,e,sum;

scanf("%d,%d,%d,%d,%d",&a,&b,&c,&d,&e);

sum=a*a+b*b+c*c+d*d+e*e;

printf("sum=%d\n",sum);

}

4.

#include

void main()

{

int a,b,c,d,e,sum;

scanf("%d,%d,%d,%d,%d",&a,&b,&c,&d,&e);

sum=a*a+b*b+c*c+d*d+e*e;

printf("sum=%d\n",sum);

}

5.

#include

#define PI 3.14159

void main()

{

float r,l,s;

printf("请输入圆半径(r):");

scanf("%f",&r);

l=2*PI*r;

s=r*r*PI;

printf("\n圆周长 l=%6.2f\n",l);

printf("圆面积 s=%6.2f\n",s);

}

6.

#include

void main()

{

printf("\"what a beautiful campus!\"\n");

printf("\"I wish you every success!\"\n");

}

实验二

1.

#include

void main()

{

int a,b,c;float x;

scanf("a=%d,b=%d,c=%d,x=%f",&a,&b,&c,&x);

printf("%f",a*x*x*x+b*x*x+c);

}

2。

#include

void main()

{

int a,b;

scanf("a=%d,b=%d",&a,&b);

printf("ji=%d,shang=%d,yushu=%d",a*b,a/b,a%b);

}

3.

#include "stdio.h"

void main()

{

float C,F;

scanf("%f",&F);

C=5.0/9*(F-32);

printf("%f",C);

}

4.

#include

#define PI 3.14159

void main()

{

float r,l,s;

printf("请输入圆半径(r):");

scanf("%f",&r);

l=2*PI*r;

s=r*r*PI;

printf("\n圆周长 l=%6.2f\n",l);

printf("圆面积 s=%6.2f\n",s);

}

5。

#include

void main()

{

float c=3.123456789;

printf("%f",c);




}

实验三

1.

#include

void main()

{

int a=3,b=4,c=5;

float x=1.414,y=1.732,z=2.712;

printf("a=%-7d b=%-7d c=%-7d\nx=%-7.3f y=%-7.3f z=%-7.3f",a,b,c,x,y,z);

}

2.

#include

void main()

{

int a,b,c;

float x,y,z;

scanf("%d",&a);

scanf("%d",&b);

scanf("%d",&c);

scanf("%f",&x);

scanf("%f",&y);

scanf("%f",&z);

printf("a=%d,b=%d,c=%d\nx=%.3f,y=%.3f,z=%.3f,\n",a,b,c,x,y,z);




}

3，

#include

void main()

{

int a,b,c,x1,x2;

scanf("%d,%d,%d",&a,&b,&c);

x1=a+b+c;

x2=a-b-c;

printf("x1=a+b+c=%d+%d+%d=%d\n",a,b,c,x1);

printf("x2=a-b-c=%d-%d-%d=%d\n",a,b,c,x2);

}

4.

#include

void main()

{

char c1,c2,c3,c4;




scanf("%c%c%c%c",&c1,&c2,&c3,&c4);

printf("%d,%d,%d,%d",c1,c2,c3,c4);

}

5.

#include

void m

ain()

{

int d1=60,d2=61,d3=62,d4=63;

printf("%c %c %c %c",d1+5,d2+5,d3+5,d4+5);

}

6.

#include

void main()

{

int m=12345678,n=3456789;

printf("m=%d n=%d",m,n);

}

7.

#include

void main()

{

int a=20,b=64,c=127;

printf("a=%d,%o,%x\n",a,a,a);

printf("b=%d,%o,%x\n",b,b,b);

printf("c=%d,%o,%x\n",c,c,c);

}

8.

#include

void main()

{

float x,y,z;

x=1.414;

y=1.732;

z=2.712;

printf("%6.2f,%6.2f,%6.2f",x,y,z);

}

9.

#include"stdio.h"

void main()

{

float a;

a=1.0/3;

printf("%0.6f%%\n",a);

}

10.

#include

void main()

{

int a,b,

a=getchar(b=getchar()c=getchar();

a=a+32;

b=b+32;

c=c+32;

putchar(a);

putchar(b);

putchar(c);

}

实验四

1.

#include

void main ()

{

int a,b,c,max;



scanf("%d,%d,%d",&a,&b,&c);

max=a;

if(a
max=b;

if(b
max=c;

printf("%d",max);

}

2.

#include

void main()

{

int x,y;

scanf("%d",&x);

if(x<1)

y=x;

else

if(x<10)

y=2*x-1;

else

y=3*x-11;

printf("%d\n",y);

}

3.

#include

void main()

{

int grade;

printf("Please enter the grade");

scanf("%d",&grade);

if(grade<=100 && grade>=90)

printf("A");

else if(grade<=89 && grade>=80)

printf("B");

else if(grade<=79 && grade>=70)

printf("C");

else if(grade<=69 && grade>=60)

printf("D");

else if(grade<60)

printf("E");




}

4.

#include

void main()

{

int a,b,c,d,e,f,g,h;

scanf("%d",&f);

a=f/10000;

b=f/1000%10;

c=f/100%10;

d=f/10%10;

e=f%10;

if(f/10>0)

{

if(f/100>0)

{

if(f/1000>0)

{

if(f/10000>0)

g=5;

else g=4;

}

else g=3;

}

else g=2;

}

else g=1;

printf("g=%d\n",g);

printf("a=%d\nb=%d\nc=%d\nd=%d\ne=%d\n",a,b,c,d,e);

printf("h=%d%d%d%d%d\n",e,d,c,b,a);

}

5.

#include "stdio.h"

#include "math.h"

void main()

{ float a,b,c,p,q,t,x1,x2;

printf("input a,b,c: "); scanf("%f,%f,%f",&a,&b,&c);

if (a==0.) printf("a==0!!! return.");

else

{ p=-b/(2.*a); t=b*b-4*a*c; q=sqrt(fabs(t))/(2.*a);

if (t==0.) printf("\n x1=x2=%-f",p);

else if (t>0.) printf("\n x1=%-f,x2=%-f\n",p+q,p-q);

else printf("\n x1=%-f + %f i, x2=%-f -%f i\n", p, q, p, q);

}

}

实验五

1.

#include

void main()

{int i,sum;

i=1,sum=0;

while(i<=100)

{sum=sum+i;

i++;

}

printf("%d\n",sum);

}

2.

#include

void main()

{int i,j,sum;

i=1,j=1,sum=0;

for(i=1;i<=10;i++)

{

j=j*i;

sum=sum+j;

printf("%d\n",sum);

}

printf("%d\n",sum);

}

3.

#include

#include

void main()

{

int s;

float n,t,p;

t=1;p=0;n=1.0;s=1;

do

{

p=p+t;n=n*n+1;

s=-s;t=s/n;

}

while (fabs(t)>1e-5);

printf("p=%10.6f\n",p);

}

4.#include

void main()

{char c;

int letters=0,digit=0,other=0;

while((c=getchar())!='\n')

{if(c>='a'&&c<='z'||c>='A'&&c<='Z')

letters++;

else if(c>='0'&&c<='9')

digit++;

else other++;}

printf("%d\n%d\n%d\n",letters,digit,other);

}

5，

#include "stdio.h"

void main()

{ int i;

long int f1, f2;

f1=f2=1;

for (i=1; i<=20; i++)

{

printf("%12ld %12ld",f1,f2);

f1=f1+f2;

f2=f2+f1;

}

}

实验六

1.

#include

void main()

{

int sum=0,mul=1;

int i;

for(i=1;i<=10;i++)

{

mul*=i;

sum+=mul;

}

printf(" 1!+2!+3!....10!=%d\n",sum);

}

2.

#include

void main()

{

int i,j,k;

for(i=1;i<=9;i++)

{

for(j=1;j<=i;j++)

{

k=j*i;

printf("%2d*%2d=%2d",i,j,k);

}

printf("\n");

}

}

3.

#include

void main()

{

int i,j,k;

for(i=0;i<=9;i++)

{

for(j=0;j<=8-i;j++)

printf(" ");

for(k=0;k<=2*i;k++)

printf("*");

printf("\n");

}

for(i=0;i<=8;i++)

{

for(j=0;j<=i;j++)

printf(" ");

for(k=0;k<=16-2*i;k++)

printf("*");

printf("\n");

}

}

4.

#include

void main()

{int i,j,k;

for(i=0;i<=20;i++)

for(j=0;j<=33;j++)

{k=100-i-j;

if(5*i+3*j+k/3==100&&k%3==0&&(i+j+k==100))

printf("%d,%d,%d\n",i,j,k);}

}

5.

#include

void main ()

{int sum=0,s=0,i;

scanf ("%d",&i);

while (i<=5)

{s=s+i;

sum=sum+s;

i++;

}

printf ("sum=%d\n",sum);

}

实验七

1.

#include

#include

#include

void main()

{

int i,a[15];

for(i=0;i<15;i++)

a[i]=rand()%100;

for(i=0;i<15;i++)

{printf("%d ",a[i]);

if((i+1)%5==0)

printf("\n");

}

}

2.

#include

void main ()

{int a[10],i,max,min,sum=0,s=0;

float t;

for (i=0;i<10;i++)

scanf ("%d",&a[i]);

printf ("\n");

max=a[0],min=a[1];

for (i=0;i<10;i++)

if (a[i]>max)

max=a[i];

for (i=0;i<10;i++)

if (a[i]
min=a[i];

for (i=0;i<10;i++)

{s=s+a[i];

t=s/10;}

for (i=0;i<10;i++)

if (a[i]>t)

sum=sum+1;

printf ("%d,%d,%d\n",max,min,sum);

}

3.

#include"stdio.h"

void main()

{

int i;

int f[20]={0,1,1};

for(i=0;i<=19;i++)

{

f[i+3]=f[i+2]+f[i+1]+f[i];

printf("%d,",f[i]);

}

}

4.

#include

void main()

{ int a[5]={67,89,76,98,66};

int b[5],i,j;

for (i=0;i<=4;i++)

{

j=4-i;

b[j]=a[i];}

for (j=0;j<=4;j++)

printf("%d",b[j]);

}

5.

#include

void main()

{int i,j,max,a[10],t;

printf ("Please enter data:");

for (i=0;i<=9;i++)

scanf ("%d",&a[i]);

for (i=0;i<=9;i++)

{max=i;

for (j=i+1;j<=9;j++)

if (a[max]
t=a[i];a[i]=a[max];a[max]=t;}

printf ("The result is :"

);

for (i=0;i<=9;i++)

printf ("%d",a[i]);

printf ("\n");




}

实验八

1.

#include"stdio.h"

void main()

{

int a[9],f[3][3];

int i,j,t;

for(i=0;i<9;i++)

scanf("%d",&a[i]);

i=0;

for(t=0;t<3;t++)

{for(j=0;j<3;j++)

{

f[t][j]=a[i];

i++;

printf("%d",f[t][j]);

}

printf("\n");

}

}

2.

#include

#define m 3

#define n 4

void main()

{ long a

?[n+1];

int i,j;

for (i=0;i
{ a[i][n]=0;

for(j=0;j
{ a[i][j]=rand();

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

printf("%8ld",a[i][j]);

}

printf(" %8ld \n",a[i][n]);}

}

3.




#include

#define m 3

#define n 4

main()

{ long a

?[n];

int i,j,row=0,col=0;

for (i=0;i
{ for (j=0; j
{a[i][j]=rand();

printf("%8ld",a[i][j]);

if (a[row][col]
{ row=i;col=j; }

}

printf("\n");

}

printf("\n max=%ld row=%d col=%d \n",a[row][col],row+1,col+1);

}

4.

void main()

{ float a[100][2],temp,temp1; int i,j,p,n;

printf("\n input number of student n=");

scanf("%d",&n);

for (i=0;i
{ printf("\n input num,score of %dth student:",i+1);

scanf("%f,%f",&temp1,&temp);

a[i][0]=temp1;a[i][1]=temp;

}

for (i=0; i
{ p=i;

for (j=i+1; j
if (p!=i)

{ temp=a[p][1];a[p][1]=a[i][1];a[i][1]=temp;

temp=a[p][0];a[p][0]=a[i][0];a[i][0]=temp; }

}

printf("\n input admittable number:");scanf("%d",&p);

printf("\n output name list: \n");

for (i=0; i

printf("%10.0f %10.1f\n",a[i][0],a[i][1]);

}

5.

#include

void main()

{

int a[4][4];

int i,j;

for(i=0;i<4;i++)

{

for(j=0;j<4;j++)

{

if(i==j)

a[i][j]=1;

else a[i][j]=0;

}

}

for(i=0;i<4;i++)

{

for(j=0;j<4;j++)

{

printf("%d ",a[i][j]);

}

printf("\n");

}

printf("\n");

}
实验九
1
#include "stdio.h"
long fun(int K)
{
int fact=1,i;
for(i=1;i<=K;i++)
fact*=i;
return fact;
}
void main()
{
int m,n;
long k1,k2,k3;
printf("input m,n:");
scanf("%d,%d",&m,&n);
k1=fun(m);
k2=fun(n);
k3=fun(n-m);
printf("fact=%f\n",k2/(k1*k3*1.0));
}
2
#include
long IS_sum(int n)
{
int i;
long int f1, f2,f3,sum;
f1=f2=1;
sum=0;
for (i=1; i<=n; i++)
{
f3=f1+f2;
sum=sum+f3;
printf("%12ld %12ld",f1,f2);
f1=f1+f2;
f2=f2+f1;
}
return(sum);
}
void main()
{
int N;
long sum;
printf("Input n:");
scanf("%d",&N);
sum=IS_sum(N);
printf("\n");

printf("sum=%ld,average=%f\n",sum,sum/(N*1.0));
}
3
#include "stdio.h"
#include "math.h"
double fun(double x)
{
double f=0.0;
f=sin(2*x)+x;
return f;
}

double integral(double a,double b,double(* fun)(double),int N)
{
const int n=N;
int i=0;
double sumf=0.0,xi=0.0,xi1=0.0,fv=0.0,h=0.0;
h=(b-a)/n;
xi=a;
for(i=0;i{
xi1=xi+h;
fv=((* fun)(xi)+(* fun)(xi1))*0.5*h;
sumf=sumf+fv;
xi=xi1;
}
return sumf;
}

void main()
{
double t;
int k;
printf("Inpute k:");
scanf("%d",&k);
t=integral(0,3.14159,fun,k);
printf("Result=%10.3f\n", t);
}
4
#include "stdio.h"
#include "math.h"
psushu(m)
int m;
{
int i=2,t;
for(;i<=m;i++)
if(m%i==0&&iif(m-i==0) t=1;
else t=0;
return m;
}
main()
{
int a,s;
printf("enter sushu is \n");
scanf("%d",&a);
s=psushu(a);
if(s==1) printf("a is sushu\n");
else printf("s is not sushu\n");
}
6
#include
isprime(int n)
{
for (int i = 3; i < n / 2; i++)
if (!(n%i))
return 0;
return 1;
}
void main()
{
int sum = 2;
int a,b;
scanf("%d,%d",&a,&b);
for (int i = a; i < b; i +=2)
if (isprime(i))
sum += i;
printf("sum = %d\n", sum);
}
实验十
1
打开"开始---程序----附件----记事本"
输入：
1001 zhangsan 78 90 89
1002 lisi 99 88 77
1003 wangwu 89 76 55
1004 zhaoliu 53 55 44
存在e盘根目录下，文件名为123.txt

2
#include
#include
#define N 5
main( )
{
FILE *fp;
int num,sc1,sc2,sc3,score,i;
char name[10];
if((fp=fopen("c:\\123.txt","r"))==NULL)
{ printf("Error");
exit(0);
}
for (i=1;i<=N;i++)
{ fscanf(fp,"%d%s%d%d%d\n",&num,name,&sc1,&sc2,&sc3);
score=sc1+sc2+sc3;
printf("%6d%10s%6d%6d%6d%6d\n",num,name,sc1,sc2,sc3,score/3);
}
fclose(fp);
}
3
#include
#include
#define N 5
struct student
{
int num;
char name[10];
int score;
char dianhua[10];
};
main( )
{
FILE *fp;
int i;
struct student stu[N];
clrscr();
if((fp=fopen("d:\\xuesheng.txt","w"))==NULL)
{
printf("Error");
exit(0);
}
for (i=0;i{
scanf("%d%s%d%s",&stu[i].num,stu[i].name,&stu[i].score,stu[i].dianhua);
fprintf(fp,"%6d%10s%6d%10s\n",stu[i].num,stu[i].name,stu[i].score,stu[i].dianhua);
}
fclose(fp);
}
4
#include
#include
#define N 5
struct student
{
int num;
char name[10];
int score;
char dianhua[10];
};
main( )
{
FILE *fp;
int i,xuehao;
struct student stu[N];
clrscr();
if((fp=fopen("c:\\xuesheng.txt","r"))==NULL)
{ printf("Error");
exit(0);
}
scanf("%d",&xuehao);
for (i=0;i{ fscanf(fp, "%d%s%d%s\n",&stu[i].num,stu[i].name,&stu[i].score,stu[i].dianhua);
if(stu[i].num==xuehao)
printf("%6d%10s%6d%10s\n",stu[i].num,stu[i].name,stu[i].score,stu[i].di

anhua);
}
fclose(fp);
}
5
#include
#include
void main( )
{
FILE *fp1,*fp2;
char ch;
if(( fp1=fopen("c:\\file4.c", "r"))==NULL)
{ printf("Error");
exit(0);
}
if(( fp2=fopen("c:\\file5.c", "w"))==NULL)
{ printf("Error");
exit(0);
}
ch=fgetc(fp1);
while(ch!=EOF)
{
fputc(ch,fp2);
ch=fgetc(fp1);
}
fclose(fp1);
fclose(fp2);
}