高级程序员设计语言第八次个人作业

这个作业属于哪个课程：https://edu.cnblogs.com/campus/fzu/2024C
这个作业要求在哪里： https://edu.cnblogs.com/campus/fzu/2024C/homework/13307
学号：102400229
姓名：石华波

//11.13.1
#include<stdio.h>

void GetStr(char *str,int n);

int main(){
    char str[101];
    int n=10;
    GetStr(str,n);
    printf("%s",str);
    return 0;
} 

void GetStr(char *str,int n){
    while(n--){
        *(str++)=getchar();
    }
    *str='\0';
}

//11.13.2
#include<stdio.h>

void GetStr(char *str,int n);

int main(){
    char str[101];
    int n=10;
    GetStr(str,n);
    printf("%s",str);
    return 0;
} 

void GetStr(char *str,int n){
    while(n--){
        *str=getchar();
        if(*str==' '||*str=='\n'||*str=='\t') {
            *(str++)='\0';
            return;
        }
        str++;
    }
    *str='\0';
}

//11.13.3
#include<stdio.h>

void GetWord(char *str);

int main(){
    char str[101];
    int n=10;
    GetWord(str);
    printf("%s",str);
    return 0;
} 

void GetWord(char *str){
    char ch;
    ch=getchar();
    while(ch<=32) ch=getchar();
    while(ch!=' '&&ch!='\n'&&ch!='\t'){
        *(str++)=ch;
        ch=getchar();
    }
    *str='\0';
}

//11.13.6
#include<stdio.h>

int is_within(char *str,char ch);

int main(){
    char str[101];
    char ch;
    while(scanf("%s %c",str,&ch)!=EOF){
        if(is_within(str,ch)) printf("\'%c\' is within \"%s\"\n",ch,str);
        else printf("\'%c\' is without \"%s\"\n",ch,str);
    }
    return 0;
} 

int is_within(char *str,char ch){
    while(*str!='\0'){
        if(ch==*str) return 1;
        str++;
    }
    return 0;
}

//11.13.7
#include<stdio.h>

char *mystrncpy(char *dest,char *src,int n);

int main(){
    char src[101];
    char dest[10];
    char ch;
    while(scanf("%s",src)!=EOF){
        mystrncpy(dest,src,10);
        puts(dest);
    }
    return 0;
} 

char *mystrncpy(char *dest,char *src,int n){
    int cnt=0;
    while(*src!='\0'&&cnt<=n){
        *(dest+cnt)=*src++;
        cnt++;
    }
    if(cnt<=n) *(dest+cnt)='\0';
    return dest;
}

//12.9.1
#include<stdio.h>

void critic(int *units);

int main(){
    int units;
    printf("How many pounds to a firkin of butter?\n");
    scanf("%d",&units);
    while(units!=56) critic(&units);
    printf("You must have looked it up!\n");
    return 0;
} 

void critic(int *units){
    printf("No luck,my friend.Try again.\n");
    scanf("%d",units);
}

//12.9.2 pe12-2a.h
#ifndef PE12_2A_H_
#define PE12_2A_H_

void set_mode(int n);
void get_info(void);
void show_info(void);

#endif

//12.9.2 pe12-2a.c
#include <stdio.h>
#include "pe12-2a.h"

static int mode;
static double range;
static double fuel;

void set_mode(int n){
    if (n > 1) printf("Invalid mode specified. Mode %s used.\n",(mode==0)?"0(metric)" : "1(US)");
    else mode = n;
    return;
}

void get_info(void){
    if (mode==0) printf("Enter distance traveled in kilometers: ");
    else printf("Enter distance traveled in miles: ");
    scanf("%lf", &range);
    if (mode==0) printf("Enter fuel consumed in liters: ");
    else printf("Enter fuel consumed in gallons: ");
    scanf("%lf", &fuel);
}

void show_info(void){
    if (mode==0) printf("Fuel consumption is %.2lf liters per 100km.\n",(fuel/range) * 100);
    else printf("Fuel consumption is %.1lf miles per gallon.\n",range / fuel);
}

//12.9.2 pe12-2b.c
#include <stdio.h>
#include "pe12-2a.h"

int main(void){
    int mode;
    printf("Enter 0 for metric mode, 1 for US mode: ");
    scanf("%d", &mode);
    while (mode >= 0){
        set_mode(mode);
        get_info();
        show_info();
        printf("Enter 0 for metric mode, 1 for US mode");
        printf("(-1 to quit): ");
        scanf("%d", &mode);
    }
    printf("Done.\n");
    return 0;
}

//12.9.3 pe12-3a.h
#ifndef PE12_3A_H_
#define PE12_3A_H_

void set_mode(int *mode, int *n);
void get_info(int mode, double *range, double *fuel);
void show_info(int mode, double range, double fuel);

#endif

//12.9.3 pe12-3a.c
#include <stdio.h>
#include "pe12-3a.h"

void set_mode(int *mode, int *n){
    if (*mode > 1) printf("Invalid mode specified. Mode %s used.\n",(0 == *n) ? "0(metric)" : "1(US)");
    else *n = *mode;
}

void get_info(int mode, double *range, double *fuel){
    if (0 == mode) printf("Enter distance traveled in kilometers: ");
    else printf("Enter distance traveled in miles: ");
    scanf("%lf", range);
    if (0 == mode) printf("Enter fuel consumed in liters: ");
    else printf("Enter fuel consumed in gallons: ");
    scanf("%lf", fuel);
}

void show_info(int mode, double range, double fuel){
    if (0 == mode) printf("Fuel consumption is %.2lf liters per 100 km.\n",(fuel / range) * 100);
    else printf("Fuel consumption is %.1lf miles per gallon.\n",range / fuel);
}

//12.9.3 pe12-3b.c
#include <stdio.h>
#include "pe12-3a.h"

int main(void){
    int temp, mode;
    double range, fuel;

    printf("Enter 0 for metric mode, 1 for US mode: ");
    scanf("%d", &mode);
    temp = mode;
    while (mode >= 0){
        set_mode(&mode, &temp);
        get_info(temp, &range, &fuel);
        show_info(temp, range, fuel);
        printf("Enter 0 for metric mode, 1 for US mode");
        printf("(-1 to quit): ");
        scanf("%d", &mode);
    }
    printf("Done.\n");
    return 0;
}

//12.9.8
#include <stdio.h>
#include <stdlib.h>

int *make_array(int elem, int val);
void show_array(const int ar[], int n);

int main(void){
    int *pa;
    int size;
    int value;
    printf("Enter the number of elements: ");
    while (scanf("%d", &size) == 1 && size > 0){
        printf("Enter the initialization value: ");
        scanf("%d", &value);
        pa = make_array(size, value);
        if (pa){
            show_array(pa, size);
            free(pa);
        }
        printf("Enter the number of elements (<1 to quit): ");
    }
    printf("Done.\n");
    return 0;
}

int *make_array(int elem, int val){
    int i;
    int *pt = (int *)malloc(elem * sizeof(int));
    for (i = 0; i < elem; i++) pt[i] = val;
    return pt;
}

void show_array(const int ar[], int n){
    for (int i = 0; i < n; i++) printf("%d%c", ar[i], (i + 1) % 8 == 0 ? '\n' : ' ');
    if (n % 8 != 0) printf("\n");
}

//12.9.9
#include <stdio.h>
#include <string.h>
#include <stdlib.h>
#define LEN 256

int main(void){
    int i, n;
    char **pt;
    static char temp[LEN];
    printf("How many words do you wish to enter? ");
    scanf("%d", &n);
    if ((pt = (char **)malloc(n * sizeof(char *))) != NULL){
        printf("Enter %d words now:\n", n);
        for (i = 0; i < n; i++){
            scanf("%255s", temp);
            pt[i] = (char *)malloc((strlen(temp) + 1) * sizeof(char));
            strcpy(pt[i], temp);
        }
        printf("Here are your words:\n");
        for (i = 0; i < n; i++){
            puts(pt[i]);
            free(pt[i]);
            pt[i] = NULL;
        }
        free(pt);
        pt = NULL;
    }
    else{
        printf("Memory allocation failed!\n");
        exit(EXIT_FAILURE);
    }
    return 0;
}