C语言程序设计第一章部分习题

朴灿烈づ我的快乐病毒、 2022-05-10 08:50 232阅读 0赞

作为一个程序员一直不会C程序设计语言，觉得缺点什么，所以最近在学习C ，会定期分享学习心得，最近刚看完第一章，部分习题供大家参考，欢迎指正。

C程序设计语言 下载地址

提取码: nbnb

#include "Temperature.h"
    
    
    Temperature::Temperature(void)
    {
    }
    
    
    Temperature::~Temperature(void)
    {
    }
    
    void statisticsEmptyLineTablesNum(){
    	int emptyChar = 0;
    	int changeLineChar = 0;
    	int tableChar = 0;
    	int c;
    	bool slash = false;
    	while ((c = getchar())!=EOF){
    
    		if (c == 10){
    			printf("emptyChar %d changeLineChar %d tableChar %d", emptyChar, changeLineChar, tableChar);
    			return;
    		} else if(c == ' '){
    			emptyChar ++;
    		}else if(slash == 1) {
    			switch(c){
    			case 'n':
    				changeLineChar ++;
    				break;
    			case 't':
    				tableChar ++;
    				break;
    			}
    		}
    		slash = c == '\\';
    	}
    }
    
    
    /*
     *只显示一个空格
     */
    void practice1_9_only_one_empty(){
    	printf("输入的多个空格字符只会保留一个\n");
    	bool lastEmpty = false;
    	int c;
    
    	while((c = getchar()) != EOF){
    		bool charIsEmpty = c == ' ';
    		if(!lastEmpty || !charIsEmpty){
    			putchar(c);
    		}
    		lastEmpty = charIsEmpty;
    	}
    }
    
    void practice1_10(){
    	printf("输入的多个制表符用\\t替换\n");
    	bool lastEmpty = false;
    	char s;
    	int c;
    
    	while((c = getchar()) != EOF){
    		char cha;
    		if(c == '\t'){
    			putchar('\\');
    			c = 't';
    		}
    		putchar(c);
    		
    	}
    }
    
    /*
     * 一行打印一个单词
     */
    void practice1_12(){
    	printf("输入的多个单词将逐行打印且一行只会有一个单词\n");
    	bool isLastEnd = false; // 最后一个字符是否是结束字符
    	int lastc;
    	while ((lastc = getchar()) != EOF) {
    		if (lastc == ' ' || lastc == '\n' || lastc =='\t'){
    			if (!isLastEnd) 
    				printf("\n");	
    			isLastEnd = true;
    		} else {
    			isLastEnd = false;
    			putchar(lastc);
    		}
    	}
    	printf("\n End print");
    }
    
    void printVertical(bool isPrintFromat, int countPosition, int countArray[]){
    	if(isPrintFromat)
    		printf("\n打印格式\n");
    	else {
    		printf("\n不打印格式\n");
    	}
    	int maxCount = 0;
    	for (int i = 0; i < countPosition; i ++)
    	{
    		if (maxCount < countArray[i])
    			maxCount = countArray[i];
    	}
    	for (int i = 0; i < countPosition; i ++) {
    		printf("%2d", countPosition - i);
    		int showNum = countArray[i]; // 输出白色背景个数
    		int showStart = (maxCount - showNum) / 2; // 左边输出的空格
    		for (int j = 0; j < maxCount; j ++) {
    			if (j > showStart -1 && showNum > 0){
    				printf("C");
    				showNum --;
    			} else if(showNum > 0 && isPrintFromat) {
    				printf(" ");
    			} else if( showNum == 0) {
    				break;
    			}
    
    		}
    		
    		printf("\n");
    	}
    	printf("  ");
    	for (int i = 0; i < maxCount; i ++)
    	{
    		printf("%d", i + 1);
    	}
    }
    
    void practice1_13() {
    	printf("start printf\n");
    	bool isLastEnd = false;
    	int count, countPosition;
    	int lastc;
    	int countArray[10];
    	count = countPosition = 0;
    	for (int i =0; i < 10; i ++) 
    		countArray[i] = 0;
    	
    	while ((lastc = getchar()) != EOF && lastc != 'E') 
    	{
    		if (lastc == ' ' || lastc == '\n' || lastc =='\t') {
    			if (!isLastEnd) {
    				countArray[countPosition] = count;
    				printf("\n%d", count);
    				count = 0;
    				countPosition ++;
    			}					
    			isLastEnd = true;
    		} else {
    			isLastEnd = false;
    			// putchar(lastc);
    			count ++;
    		}
    	}
    	printf("\n");
    	printVertical(false, countPosition, countArray);
    	printVertical(true, countPosition, countArray);
    	printf("end printf");
    }
    
    void practice1_17();
    void practice1_18();
    void practice1_19();
    void reverse(char string[], int len);
    int getline(char string[]);
    
    void main()
    #define UPPER 300
    #define LOWER 0
    #define STEP 20
    #define MAXLINE 500
    {
    	printf("start print\n");
    	practice1_19();
    	printf("\nend print");
    }
    void practice1_17(){
    	char contents[MAXLINE];
    	int len = 0;
    	while((len = getline(contents)) > 80){
    		printf("\n支付串长度%4d", len);
    		printf("\n输入的字符串%s", contents);
    		printf("\n%s\t%4d", contents, len);
    	}
    }
    void practice1_18(){
    	char contents[MAXLINE];
    
    	int len = 0;
    	
    	len = getline(contents);
    	len --;
    	printf("\n输入的字符%s\t数量%4d", contents, len);
    	char lastCha;
    	int emptyChar, tableChar;
    	emptyChar = tableChar = 0;
    	for (; len > 0; len --)
    	{
    		lastCha = contents[len-1];
    		if(lastCha == ' '){
    			emptyChar ++;
    			contents[len] = '\0';
    		}else if (lastCha == '\t')
    		{
    			tableChar ++;
    			contents[len] = '\0';
    		}else {
    			break;
    		}
    	}
    	printf("\n末尾空格数量%3d\t末尾制表符数量", emptyChar, tableChar);
    	
    	printf("\n过滤后的字符%s\t数量%4d", contents, len);
    
    }
    
    void practice1_19(){
    	int c;
    	char string[MAXLINE];
    	int index = 0;
    	while((c = getchar()) != EOF && c != '\n'){
    		string[index] = c;
    		index ++;
    	}
    	index --;
    	reverse(string, index);
    }
    
    void reverse(char string[], int len) {
    	for (; len >= 0; len --)
    		printf("%c", string[len]);
    }
    
    int getline(char string[]){
    	int c, i;
    	for (i = 0; (c = getchar()) != EOF && c != '\n'; i ++)
    		string[i] = c;
    	if (c == '\n'){
    		string[i] = c;
    		i++;
    	}
    	string[i] = '\0';
    	return i;
    }