高级语言程序设计课程第五次个人作业

2024高级语言程序设计:https://edu.cnblogs.com/campus/fzu/2024C
高级语言程序设计课程第五次个人作业:https://edu.cnblogs.com/campus/fzu/2024C/homework/13298
学号:102400226
姓名:石华波

//8.11.1
#include <stdio.h>

int main() {
    int n=0;
    while(getchar()!=EOF) n++;
    printf("%d",n);
    return 0; 
}

//8.11.2
#include <stdio.h>
#define SPACE_ASCII 32

int main(){
    int i=0;
    char ch;
    while((ch=getchar())!=EOF) {
        if(ch =='\n'||ch =='\t') printf("'\\%c'-%d ",ch=='\n'?(i=0,'n'):'t',ch);
        else if(ch<SPACE_ASCII) printf("'^%c'-%d ",ch+64,ch);
        else printf("'%c'-%d ",ch,ch);
        if(ch!='\n'&& ++i%10==0) printf("\n");
    }
    return 0;
}

//8.11.3
#include <stdio.h>
#include <ctype.h>
 
int main(){
    int Upper=0,Lower=0;
    char ch;
    while((ch=getchar())!=EOF) {
        if(isupper(ch)) Upper++;
        else if(islower(ch)) Lower++;
    }
    printf("%dUppers %dLowers\n",Upper,Lower);
    return 0;
}

//8.11.4
#include<stdio.h>
#include<ctype.h> 

int main(){
    char ch,tmp;
    int words=0,letters=0;
    while((ch=getchar())!=EOF){
        if(isalpha(ch)) letters++;
        else if(ch!='\n') words++;
    }
    printf("%.2lf letters per word.",1.0*letters/words);
    return 0;
}

//8.11.5
#include <stdio.h>

int main(){
    int response;
    int low=1,high=100, guess=(high+low)/2;

    printf("Pick an integer from 1 to 100. I will try to guess ");
    printf("it.\nRespond with a y if my guess is right, with");
    printf("\na h if it is high, and with an l if it is low.\n");
    printf("Uh...is your number %d?\n", guess);
    while((response=getchar())!='Y'){
        if(response=='\n') continue;
        if(response=='H'){
            high=guess - 1;
        }
        else if(response=='L'){
            low=guess+1;
        }
        guess=(high+low)/2;
        printf("Well, then, is it %d?\n", guess);
    }
    printf("I knew I could do it!\n");

    return 0;
}

//8.11.6
#include <stdio.h>

char get_first(void){
    int ch=getchar();
    while(ch<=32) ch=getchar();
    return ch;
}
int main(){
    printf("%c",get_first());
    return 0;
}

//8.11.7
#include<stdio.h>
#include<ctype.h>
#define EXTRA_HOUR 1.5
#define BASE_TAX 0.15
#define EXTRA_TAX 0.2
#define EXCEED_TAX 0.25

char menu();
void salary(double base_salary,double hours);
char choose();

int main(){
    char ch;
    double n;
    while ((ch=menu())!='q'){
        printf("Enter the working hours per week: ");
        scanf("%lf",&n);
        switch (ch){
            case 'a':{
                salary(8.75,n);
                break;
            }
            case 'b':{
                salary(9.33,n);
                break;
            }
            case 'c':{
                salary(10.00,n);
                break;
            }
            case 'd':{
                salary(11.20,n);
                break;
            }
        }
        putchar('\n');
    }
    printf("Done!\n");
    return 0;
}

char choose(){
    char ch;
    do{
        ch = getchar();
    } while (isspace(ch));
    return ch;
}

char menu(){
    char ch;
    printf("********************************************************\n");
    printf("Enter an alpha to choose the desired pay rate or action:\n");
    printf("a) $8.75/hr                        b) $9.33/hr\n");
    printf("c) $10.00/hr                       d) $11.20/hr\n");
    printf("q) quit\n");
    printf("********************************************************\n");
    printf("Enter an alpha(q to quit): ");
    ch=choose();
    while (ch!='a'&&ch!='b'&&ch!='c'&&ch!='d'&&ch!='q'){
        printf("Please enter a suitable alpha:");
        ch=choose();
    }
    return ch;
}

void salary(double base_salary,double hours)
{
    double tax,taxed_salary;
    double salary=(hours>40?(40+1.5*(hours-40)):hours)*base_salary;
    if (salary<=300) tax=salary*BASE_TAX;
    else if (salary<=450) tax=300*BASE_TAX+(salary-300)*EXTRA_TAX;
    else tax=300*BASE_TAX+150*EXTRA_TAX+(salary-450)*EXCEED_TAX;
    taxed_salary=salary-tax;
    printf("Untaxed salary: $%g\n",salary);
    printf("Tax: $%g\n", tax);
    printf("Taxed salary): $%g\n",taxed_salary);
}

//8.11.8
#include <stdio.h>

void menu();
float numget();

int main(){
    char ch;
    float num1,num2;
    menu();
    ch=getchar();
    while(ch!='q'){
        while(ch!='a'&&ch!='s'&&ch!='m'&&ch!='d'&&ch!='q'){
            printf("Enter a suitable choice.\n");
            menu();
            getchar();
            ch=getchar();
        }
        if(ch=='q') break;
        printf("Enter first number:");
        num1=numget();
        printf("Enter second number:");
        num2=numget();
        while(num2==0&&ch=='d'){
            printf("Zero can't be used here,please enter a proper number:");
            num2=numget();
        }
        if(ch=='a') printf("%f+%f=%f\n",num1,num2,num1+num2);
        else if(ch=='s') printf("%f-%f=%f\n",num1,num2,num1-num2);
        else if(ch=='m') printf("%f*%f=%f\n",num1,num2,num1*num2);
        else printf("%f/%f=%f\n",num1,num2,num1/num2);
        menu();
        getchar();
        ch=getchar();
    }
    printf("Bye.\n");
    return 0;
}

void menu(){
    printf("Enter the operation of your choice:\n");
    printf("a. add          s. subtract\n");
    printf("m. multiply     d. divide\nq. quit\n");
}

float numget(){
    
    float num;
    while(scanf("%f",&num)!=1){
        printf("That's not a number,please enter a proper number:");
    }
    return num;
}

//9.11.1
#include <stdio.h>

double min(double x,double y);

int main(){
    double x=0.26,y=0.02;
    printf("%lf",min(x,y));
    return 0;
}

double min(double x,double y){
    return x<y?x:y;
}

//9.11.2
#include <stdio.h>

void chline(char ch,int i,int j);

int main(){
    char ch='A';
    int i=3,j=4;
    chline(ch,i,j);
    return 0;
}

void chline(char ch,int i,int j){
    for(int m=0;m<i;m++){
        for(int n=0;n<j;n++) putchar(ch);
        putchar('\n');
    }
}

//9.11.3
#include <stdio.h>

void chline(char ch,int i,int j);

int main(){
    char ch='A';
    int i=3,j=4;
    chline(ch,i,j);
    return 0;
}

void chline(char ch,int i,int j){
    for(int m=0;m<j;m++){
        for(int n=0;n<i;n++) putchar(ch);
        putchar('\n');
    }
}

//9.11.4
#include <stdio.h>

double harave(double x,double y);

int main(){
    double x=2,y=3;
    printf("%lf",harave(x,y));
    return 0;
}

double harave(double x,double y){
    return 1/(1/x+1/y);
}

//9.11.5
#include <stdio.h>

void large_of(double *x,double *y);

int main(){
    double x=2,y=3;
    large_of(&x,&y);
    printf("%lf %lf",x,y);
    return 0;
}

void large_of(double *x,double *y){
    *x=*x>*y?*x:*y;
    *y=*y>*x?*y:*x;
}

//9.11.6
#include <stdio.h>

void sort(double *x,double *y,double *z);

int main(){
    double x=5,y=4,z=3;
    sort(&x,&y,&z);
    printf("%lf %lf %lf",x,y,z);
    return 0;
}

void sort(double *x,double *y,double *z){
    double temp;
    if(*x>*y){
        temp=*x;
        *x=*y;
        *y=temp;
    }
    if(*y>*z){
        temp=*y;
        *y=*z;
        *z=temp;
    }
    if(*x>*y){
        temp=*x;
        *x=*y;
        *y=temp;
    }
}

//9.11.7
#include <stdio.h>
#include <ctype.h>

void read();
int alpha(char ch);

int main(){
    read();
    return 0;
}

void read(){
    char ch;
    while((ch=getchar())!=EOF){
        if(ch=='\n') continue;
        if(alpha(ch)==-1) printf("%c not an alpha.\n",ch);
        else printf("%c is %d\n",ch,alpha(ch));
    }
}

int alpha(char ch){
    int poi=-1;
    if(isalpha(ch)){
        ch=toupper(ch);
        poi=(ch-64)%26;
    }
    return poi;
}

//9.11.8
#include <stdio.h>
 
double power(double x,int n);
 
int main(){
    double x1=3,x2=0;
    int n1=0,n2=-3,n3=5;
    printf("3^0=%lf 3^-3=%lf 3^5=%lf 0^0=%lf 0^-3=%lf\n",power(x1,n1),power(x1,n2),power(x1,n3),power(x2,n1),power(x2,n2));
}

double power(double x,int n){
    double y=x;
    if(x==0&&n==0) return 1;
    else if(x==0) return 0;
    else if(n==0) return 1;
    else{
        if(n>0) for(int i=1;i<n;i++) x*=y;
        else for(int i=n;i<=0;i++) x/=y;
    }
    return x;
}

//9.11.9
#include <stdio.h>
 
double power(double x,int n);
 
int main(){
    double x1=3,x2=0;
    int n1=0,n2=-3,n3=5;
    printf("3^0=%lf 3^-3=%lf 3^5=%lf 0^0=%lf 0^-3=%lf\n",power(x1,n1),power(x1,n2),power(x1,n3),power(x2,n1),power(x2,n2));
}

double power(double x,int n){
    if(x==0&&n==0) return 1;
    else if(x==0) return 0;
    else if(n==0) return 1;
    else{
        if(n>0) return x*power(x,n-1);
        else return power(x,n+1)/x;
    }
    return x;
}

//9.11.10
#include <stdio.h>
 
void to_base_n(unsigned long n,int base);
 
int main(){
    to_base_n(129,8);
    return 0;
}

void to_base_n(unsigned long n,int base){
    int r;
    r=n%base;
    if(n>=base) to_base_n(n/base,base);
    printf("%d",r);
}

//9.11.11
#include <stdio.h>
 
long long Fibionacii(int n);
 
int main(){
    for(int i=1;i<=20;i++) printf("%lld\n",Fibionacii(i));
    return 0;
}

long long Fibionacii(int n){
    int a=1,b=1;
    for(int i=2;i<n;i++){
        b=a+b;
        a=b-a;
    }
    return b;
}