C Primer Plus 10章练习题
#include<stdio.h>#define MONTHS 12
#define YEARS 5
#define NUMS 10
#define N 3
#define M 5
#define X 4
double copy_arr(double target[],double source[],int i);
double copy_ptr(double target[],double source[],int i);
double copy_pstrs(double target[],double source[],double *p);
void new_printf(double *p,int i); //第二题的打印公共函数
int max_num1(double source[],int i);
int max_num(int *p);
double max_min(double source[],int j);
void Reverse_order(double *p,int j);
void copy_Two_dim_array(int t_d_array1,int t_d_array2,int i,int j);
double valarr_copy(int n,int m,double val_arr1,double val_arr2);
void vararr_printf(int n,int m,double val_arr1,double val_arr2);
int sum_array3(int int_arr1[],int int_arr2[],int int_arr3[],int i);
int int3x5_printf(int int3x5_1[],int i);
int int3x5_double(int int3x5_1[],int int3x5_2[],int i);
double year_rainfall(float rain[],int i);
void input_arr(double input_arr3x5[],int i); //输入3X5数组
double input_arr_avage(double input_arr3x5[],int i); //行平均值
double input_arr_avage_all(double input_arr3x5[],int i);//数组平均值
double input_arr_max(double input_arr3x5[],int i);//数组最大数
void input_arr_print(double input_arr3x5[],int p);//打印函数
int val_input_arr(int n,int m,int i,double val_input_arr);//变长输入3X5数组
double val_input_arr_avage(int n,int m,int i,double val_input_arr); //变长行平均值
double val_input_arr_avage_all(int n,int m,int i,double val_input_arr);//变长数组平均值
double val_input_arr_max(int n,int m,int i,double val_input_arr);//变长数组最大数
int val_input_arr_print(int n,int m,int i,double val_input_arr);//变长数组打印
int main(void)
{
float rain=
{
{4.3,4.3,4.3,3.0,2.0,1.2,0.2,0.2,0.4,2.4,3.5,6.6},
{8.5,8.2,1.2,1.6,2.4,0.0,5.2,0.9,0.3,0.9,1.4,7.3},
{9.1,8.5,6.7,4.3,2.1,0.8,0.2,0.2,1.1,2.3,6.1,8.4},
{7.2,9.9,8.4,3.3,1.2,0.8,0.4,0.0,0.6,1.7,4.3,6.2},
{7.6,5.6,3.8,2.8,3.8,0.2,0.0,0.0,0.0,1.3,2.6,5.2}
},subtot,total, *ptr1;
int year,month,num,i,j,num1={1,3,5,2,4,100,21,44,31,0},int_arr1={2,4,6,8},int_arr2={1,0,4,6},int_arr3;
int t_d_array2;int int3x5_1={{5,4,6,3,4},{2,5,6,88,4},{3,65,44,2,1}},int3x5_2;
int t_d_array1=
{
{111,222,333},
{444,555,666},
{777,888,999}
};
ptr1=rain;
num=YEARS*MONTHS;
double source={1.1,2.2,3.3,4.4,5.5};
double s2[]={{1.1,2.2},{3.3,4.4},{5.5,6.6},{7.7,8.8},{9.9,10.10}};
double target1,target2,target3,opp,s3,(*p8),(*pp8),three_arr;
double val_arr2,val_arr1={{2.7,3.3,5.4,6.8,1.2},{55.2,1.2,11.4,22.1,54.6},{11.8,92.4,86.1,51.3,44.9}};
double val_arr_input3x5,input_arr3x5;
//10.1
printf("YEAR RAINFALL (inches)\n");
for(year=0,total=0;year<=YEARS;year++)
{
for(month=0,subtot=0;month<MONTHS;month++)
subtot+=*(ptr1+year+month);
printf("%5d %15.1f\n",2010+year,subtot);
total+=subtot;
}
printf("\n年平均值%.1f.\n\n",total/YEARS);
printf("月平均值\n\n");
printf(" Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec\n");
for(month=0;month<MONTHS;month++)
{
ptr1=ptr1+year;
for(year=0,subtot=0;year<YEARS;year++)
subtot+=*(ptr1+year+month);
printf("%4.1f",subtot/YEARS);
}
printf("\n");
getchar();
getchar();
//10.2
printf("原数组是\n");
new_printf(source,5);
copy_arr(target1,source,5);
printf("第一份拷贝是\n");
new_printf(target1,5);
copy_ptr(target2,source,5);
printf("第二份拷贝是\n");
new_printf(target2,5);
copy_pstrs(target3,source,source+5);
printf("第三份拷贝是\n");
new_printf(target3,5);
printf("Done!");
getchar();
getchar();
//10.3
i=max_num(num1);
printf("数组中最大的值是%d\n",i);
getchar();
getchar();
//10.4
i=max_num1(source,5);
printf("数组中最大数的下标为%d\n",i);
getchar();
getchar();
//10.5
opp=max_min(source,5);
printf("数组中最大数与最小数的差为%.2f\n",opp);
getchar();
getchar();
//10.6
printf("原数组为\n");
for(i=0;i<5;i++)
printf("%.2f\t",source);
printf("\n");
printf("倒序后数组为\n");
Reverse_order(source,5);
copy_Two_dim_array(t_d_array1,t_d_array2,3,3);
getchar();
getchar();
//10.7
p8=s2,pp8=s3;
for(i=0;i<=4;i++) //用指针打印原数组
{
for(j=0;j<2;j++)
printf("%.2f\t",*(*(p8+i)+j));
printf("\n");
}
getchar();
for(i=0;i<=4;i++)
{
copy_ptr(*(pp8+i),*(p8+i),2); // 单行拷贝数组，用第2题中的函数
for(j=0;j<2;j++)
printf("%.2f\t",*(*(pp8+i)+j));
printf("\n");
}
//10.8
copy_arr(three_arr,source,3);
for(i=0;i<3;i++)
printf("%.2f\t",three_arr);
//10.9
valarr_copy(N,M,val_arr1,val_arr2);
vararr_printf(N,M,val_arr1,val_arr2);
//10.10
sum_array3(int_arr1,int_arr2,int_arr3, X);
//10.11
int3x5_printf(int3x5_1,N);
int3x5_double(int3x5_1,int3x5_2,N);
//10.12
year_rainfall( rain,5);
//10.13
input_arr(input_arr3x5,3);
input_arr_print(input_arr3x5,3); //此为打印函数,其它b.c.d项任务均在打印函数内完成。
//10.14
val_input_arr(N,M,3,val_arr_input3x5);
val_input_arr_print(N,M,3,val_arr_input3x5);
getchar();
getchar();
return 0;
}
double copy_arr(double target[],double source[],int i)
{
int j;
for(j=0;j<i;j++)
target=source;
return 0;
}
double copy_ptr(double target[],double source[],int i)
{
double *p,*q;
int j;
p=target;
q=source;
for(j=0;j<i;j++)
*p++=*q++; //*q++的运行顺序是先取*q的值 ，然后q指针向后移动一个存储位置。p指针同理。
//*++q的运行顺序是先把q指针向后移动一个存储位置，再取出*q的值
//(*q)++的运行顺序是先取出*q的值 ，再递增*q的值。
return 0;
}
double copy_pstrs(double target[],double source[],double *p)
{
int i,j;
double *m,*n;
m=target;
n=source;
for(i=4;i>=0;i--)
{
*(m+4-i)=*(p-1-i); //因为P是指向源数组结尾后面的指针，首先要把指针向前移动一个存储位置才能源数据的最后一个元素。
//从最后一个元素开始拷贝数据。
}
return 0;
}
void new_printf(double *p,int i) //实现打印功能的函数，不需要有返回值。
{
int j;
for(j=0;j<i;j++)
printf("%.1f",*(p+j));
printf("\n");
}
int max_num(int *p)
{
int i,j;
j=*(p+0);
for(i=1;i<NUMS;i++)
if(j<=*(p+i))
j=*(p+i);
return j;
}
int max_num1(double source[],int o)
{
int j,i,k;
double m,*p;
p=source;
m=source;
for(j=0,k=0;j<=o;j++)
if (m<source)
{
m=source;
k=j;
}
return k;
}
double max_min(double source[],int j)
{
int i;
double m,n;
m=source; //初始化最大最小数
n=m;
for(i=0;i<j;i++)
{
if (m<source)
m=source;
if (n>source)
n=source;
}
return (m-n);
}
void Reverse_order(double *p,int j)
{
int i;
for(i=(j-1);i>=0;i--)
printf("%.2f\t",*(p+i));
printf("\n");
}
void copy_Two_dim_array(int array1,int array2,int i,int j)
{
int m,n;
for(m=0;m<i;m++)
for(n=0;n<j;n++)
array2=array1;//倒序，方便检查
for(m=0;m<i;m++)
{
for(n=0;n<j;n++)
printf("%2d\t",array2);
printf("\n");
}
}
double valarr_copy(int n,int m,double var_arr1,double var_arr2)
{
int i,j;
for(i=0;i<n;i++)
for(j=0;j<m;j++)
*(*(var_arr2+i)+j)=*(*(var_arr1+i)+j);
return 0;
}
void vararr_printf(int n,int m,double val_arr1,double val_arr2)
{
int i,j;
printf("原数组：\n");
for(i=0;i<n;i++)
{
for(j=0;j<m;j++)
printf("%.2f\t",val_arr1);
printf("\n");
}
printf("\n拷贝数组\n");
for(i=0;i<n;i++)
{
for(j=0;j<m;j++)
printf("%.2f\t",val_arr2);
printf("\n");
}
}
int sum_array3(int int_arr1[],int int_arr2[],int int_arr3[],int i)
{
int j;
for(j=0;j<i;j++)
int_arr3=int_arr1+int_arr2;
printf("数组1\n");
for(j=0;j<i;j++)
printf("%4d",int_arr1);
printf("\n");
printf("数组2\n");
for(j=0;j<i;j++)
printf("%4d",int_arr2);
printf("\n");
printf("数组3\n");
for(j=0;j<i;j++)
printf("%4d",int_arr3);
printf("\n");
return 0;
}
int int3x5_printf(int int3x5_1[],int i)
{
int j,m;
printf("原数组\n");
for(j=0;j<i;j++)
{
for(m=0;m<5;m++)
printf("%4d",int3x5_1);
printf("\n");
}
return 0;
}
int int3x5_double(int int3x5_1[],int int3x5_2[],int i)
{
int j,m;
printf("\n翻倍数组\n");
for(j=0;j<i;j++)
{
for(m=0;m<5;m++)
printf("%4d",int3x5_2=int3x5_1*2);
printf("\n");
}
return 0;
}
double year_rainfall(float rain[],int i) //变长数组计算降水量
{
int year,month,j;
float total,month_sub;
printf("\t年份\t\t降雨量(单位:英寸)\n");
for(year=0,total=0;year<i;year++)
{
for(month=0,month_sub=0;month<MONTHS;month++)
month_sub+=rain;
printf("\t%d\t\t%.1f\n",2010+year,month_sub);
total+=month_sub;
}
printf("\t年平均降水量:%.1f英寸\n\n",total/YEARS);
printf("\t月平均降水量:\n");
printf("\tJan\tFeb\tMar\tApr\tMay\tJun\tJul\tAug\tSep\tOct\tNov\tDec\n");
for(month=0,total=0;month<MONTHS;month++)
{
for(year=0;year<i;year++)
month_sub+=rain;
printf("\t%.1f",month_sub/YEARS);
}
return 0;
}
void input_arr(double input_arr3x5[],int i) //输入3X5数组
{
int m,n;
int *p;
//p=input_arr3x5;
printf("请输入一个3行5列的数组:\n");
for(m=0;m<i;m++)
for(n=0;n<5;n++)
{
scanf("%lf",&input_arr3x5);
getchar();
}
printf("\n\n");
}
double input_arr_avage(double input_arr3x5[],int i) //行平均值
{
double m=0;
int j;
for(j=0;j<5;j++)
m+=input_arr3x5;
return m/5;
}
double input_arr_avage_all(double input_arr3x5[],int i)//数组平均值
{
double m=0;
int j,k;
for(j=0;j<i;j++)
for(k=0;k<5;k++)
m+=input_arr3x5;
return m/15;
}
double input_arr_max(double input_arr3x5[],int i)//数组最大数
{
double max=0;
int j,k;
for(j=0;j<i;j++)
for(k=0;k<5;k++)
if (max<=input_arr3x5)
max=input_arr3x5;
return max;
}
void input_arr_print(double input_arr3x5[],int p) //数组打印
{
int rows,cols,i;
printf("刚才输入的数组如下:\n");
for(rows=0;rows<p;rows++)
{
for(cols=0;cols<5;cols++)
printf("%.2f\t",input_arr3x5);
printf("\n");
}
printf("\n");
for(i=1;i<=3;i++)
printf("数组第%d行的平均值为%.2f\n",i,input_arr_avage(input_arr3x5,i-1));
printf("\n\n数组的平均值为%.2f\n",input_arr_avage_all(input_arr3x5,3));
printf("\n\n数组的最大值为%.2f\n",input_arr_max(input_arr3x5,3));
}
int val_input_arr(int n,int m,int i,double val_arr_input3x5) //变长数组输入
{
int j,k;
printf("请输入一个3行5列的数组:\n");
for(j=0;j<i;j++)
for(k=0;k<5;k++)
{
scanf("%lf",&val_arr_input3x5);
getchar();
}
printf("\n\n");
return 0;
}
double val_input_arr_avage(int n,int m,int i,double val_arr_input3x5) //变长数组行平均值
{
double s=0;
int j;
for(j=0;j<5;j++)
s+=val_arr_input3x5;
return s/5;
}
double val_input_arr_avage_all(int n,int m,int i,double val_arr_input3x5)//变长数组数组平均值
{
double s=0;
int j,k;
for(j=0;j<i;j++)
for(k=0;k<5;k++)
s+=val_arr_input3x5;
return s/15;
}
double val_input_arr_max(int n,int m,int i,double val_arr_input3x5)//变长数组数组最大数
{
double max=0;
int j,k;
for(j=0;j<i;j++)
for(k=0;k<5;k++)
if (max<=val_arr_input3x5)
max=val_arr_input3x5;
return max;
}
int val_input_arr_print(int n,int m,int i,double val_arr_input3x5)//变长数组打印函数
{
int rows,cols,f;
printf("刚才输入的数组如下:\n");
for(rows=0;rows<i;rows++)
{
for(cols=0;cols<5;cols++)
printf("%.2f\t",val_arr_input3x5);
printf("\n");
}
printf("\n");
for(f=1;f<=3;f++)
printf("数组第%d行的平均值为%.2f\n",f,val_input_arr_avage(N,M,f-1,val_arr_input3x5));
printf("\n\n数组的平均值为%.2f\n",val_input_arr_avage_all(N,M,3,val_arr_input3x5));
printf("\n\n数组的最大值为%.2f\n",val_input_arr_max(N,M,3,val_arr_input3x5));
return 0;
} ？你是想发题目还是求答案，我刚好有这本练习题的实体书 Supermexyh 发表于 2023-3-24 09:32
？你是想发题目还是求答案，我刚好有这本练习题的实体书
都不是。就是把练习题做了。发出来。还没看配套的习题答案。把全书的都做了。再看看习题答案。 看完不知道什么？
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