C语言入门 -- 数字的两种读法（2021/1/7）

数字的两种读法

数字每一位按英文读与整体按英文读

编写程序：
（1） 请求用户输入正整数，整数值应小于1000，大于0。
（2） 编写一个convertIntToWords（int value）函数，它将传递的值转换为单词，并输出单词。例如，13得到“one three”，895得到“eight nine five”。
（3） 然后编写一个新的函数convertIntToRealWords（int value），它将传递的值转换为我们真正说的单词。例如，13是“thirteen”而不是“one three”，895读作“eight hundred ninety five”，而不是“eight nine five”。
（4） 在main（）函数中分别调用这两个函数
（5） 用1，12，20，123，100，102，520作为输入的正整数来测试你的程序。

/*
  Name:programme4.c
  Author:祁麟
  Copyright:BJTU | school of software
  Date:2020/10/27 
  Description:write a function convertIntToRealWords(int value), which 
              converts the passed value to words as we really say them. 
*/

#include

int main(void){
     
	int number;
	printf("退出请输入0"); 
	while(1){
     
		printf("\n请输入一个大于0小于1000的数字: ");
	    scanf("%d",&number);
		if (number==0) break;
		printf("\n这个数字读作：");
	    convertIntToWords(number);
		printf("\n其实也可以这样读：");
	    convertIntToRealWords(number);
		printf("\n厉害吧！\n"); 
   }
return 0;	
}


//将1~999的数字分别转换为单词 
int convertIntToWords(int value){
     
	int hundreds=0,tens=0,units=0;
	
	hundreds=value/100;
	tens=value%100/10;
    units=value-100*hundreds-tens*10;

	if (hundreds!=0){
     
	switch (hundreds){
     
		case 1:printf("one ");break;
      	case 2:printf("two ");break;
      	case 3:printf("three ");break;
      	case 4:printf("four ");break;
      	case 5:printf("five ");break;
      	case 6:printf("six ");break;
      	case 7:printf("seven ");break;
      	case 8:printf("eight ");break;
      	case 9:printf("nine ");break;  
		}
	
	switch (tens){
     
		case 0:printf("zero ");break;
		case 1:printf("one ");break;
      	case 2:printf("two ");break;
      	case 3:printf("three ");break;
      	case 4:printf("four ");break;
      	case 5:printf("five ");break;
      	case 6:printf("six ");break;
      	case 7:printf("seven ");break;
      	case 8:printf("eight ");break;
      	case 9:printf("nine ");break;
	 }
	    
	switch (units){
     
        case 0:printf("zero");break;
		case 1:printf("one");break;
      	case 2:printf("two");break;
      	case 3:printf("three");break;
      	case 4:printf("four");break;
      	case 5:printf("five");break;
      	case 6:printf("six");break;
      	case 7:printf("seven");break;
      	case 8:printf("eight");break;
      	case 9:printf("nine");break;
	    }
    }
	
	if (hundreds==0&&tens!=0) {
     
		switch (tens){
     
		    case 1:printf("one ");break;
      	    case 2:printf("two ");break;
      	    case 3:printf("three ");break;
      	    case 4:printf("four ");break;
      	    case 5:printf("five ");break;
      	    case 6:printf("six ");break;
      	    case 7:printf("seven ");break;
      	    case 8:printf("eight ");break;
      	    case 9:printf("nine ");break;
	    }
	    
	    switch (units){
     
            case 0:printf("zero");break;
		    case 1:printf("one");break;
      	    case 2:printf("two");break;
      	    case 3:printf("three");break;
      	    case 4:printf("four");break;
      	    case 5:printf("five");break;
      	    case 6:printf("six");break;
      	    case 7:printf("seven");break;
      	    case 8:printf("eight");break;
      	    case 9:printf("nine");break;
	    }
	}
	
	if (hundreds==0&&tens==0){
     
		switch (units){
     
		    case 1:printf("one");break;
      	    case 2:printf("two");break;
      	    case 3:printf("three");break;
      	    case 4:printf("four");break;
      	    case 5:printf("five");break;
      	    case 6:printf("six");break;
      	    case 7:printf("seven");break;
      	    case 8:printf("eight");break;
      	    case 9:printf("nine");break;
	    }
    }

}

//将1~999的数字转换为英文单词 
int convertIntToRealWords(int value){
     
    int hundreds=0,tens=0,units=0;    
	hundreds=value/100;//得出百位上的数字 
	tens=value%100/10;//得出十位上的数字 
    units=value-100*hundreds-tens*10;//得出个位上的数字 
    
	//1到10的数 
	if(hundreds==0&&tens==0){
     
      switch(units){
     
		case 1:printf("one");break;
      	case 2:printf("two");break;
      	case 3:printf("three");break;
      	case 4:printf("four");break;
      	case 5:printf("five");break;
      	case 6:printf("six");break;
      	case 7:printf("seven");break;
      	case 8:printf("eight");break;
      	case 9:printf("nine");break;
	  }		
	}
    
	//整百的数 
	if (hundreds!=0&&tens==0&&units==0){
     
    	switch(hundreds){
     
    		case(1) :printf("one hundred");break;
    		case(2) :printf("two hundred");break;
    		case(3) :printf("three hundred");break;
    		case(4) :printf("four hundred");break;
    		case(5) :printf("five hundred");break;
    		case(6) :printf("six hundred");break;
    		case(7) :printf("seven hundred");break;
    		case(8) :printf("eight hundred");break;
    		case(9) :printf("nine hundred");break;
		}
	}
	
	//10到100之间的数 
	if (value>10&&value<100){
     
	    switch(tens){
     
            case 2:printf("twenty ");break;
            case 3:printf("thirty ");break;
            case 4:printf("forty ");break;
            case 5:printf("fifty ");break;
            case 6:printf("sixty ");break;
            case 7:printf("seventy ");break;
            case 8:printf("eighty ");break;
            case 9:printf("ninty ");break;
            case 1:
                if(units==1){
     
                    printf("eleven");	
			        break;
			    }
                else if (units==2){
     
                    printf("twelve");	
			        break;
			    }
                else if(units==3){
     
                    printf("thirteen");	
			        break;
			    }
                else if(units==4){
     
                    printf("forteen");	 
			        break;
			    }
                else if(units==5){
     
                    printf("fifteen");	 
			        break;
			    }
                else if(units==6){
     
                    printf("sixteen");	  
		            break;
		        }
                else if(units==7){
     
                    printf("seventeen");	 
			        break;
			    }
                else if(units==8){
     
                    printf("eighteen");
			        break;
			    }
                else if(units==9){
     
                    printf("ninteen");
			        break;
			    }
                else{
     
                    printf("ten");
			        break;
			    }
        }
    
	    if(tens!=1){
     
            switch(units){
     
                case 1:printf("one");break;
                case 2:printf("two");break;
                case 3:printf("three");break;
                case 4:printf("four");break;
                case 5:printf("five");break;
                case 6:printf("six");break;
                case 7:printf("seven");break;
                case 8:printf("eight");break;
                case 9:printf("nine");break;
                case 0:printf("zero");break;
            }		
	    }
    }
	
	//100~999之间的数 
	if (value>100&&value<1000){
     
    	
    	if(tens==0&&units!=0){
     //如果十位为零，个位不为零，如102 
    		switch(hundreds){
     
    			case(1) :printf("one hundred and ");break;
    			case(2) :printf("two hundred and ");break;
    			case(3) :printf("three hundred and ");break;
    			case(4) :printf("four hundred and ");break;
    			case(5) :printf("five hundred and ");break;
    			case(6) :printf("six hundred and ");break;
    			case(7) :printf("seven hundred and ");break;
    			case(8) :printf("eight hundred and ");break;
    			case(9) :printf("nine hundred and ");break;
			}
			switch(units){
     
				case(1) :printf("one");break;
    			case(2) :printf("two");break;
    			case(3) :printf("three");break;
    			case(4) :printf("four");break;
    			case(5) :printf("five");break;
    			case(6) :printf("six");break;
    			case(7) :printf("seven");break;
    			case(8) :printf("eight");break;
    			case(9) :printf("nine");break;
			}
	    }
		
		if(tens!=0&&units!=0){
     //如果十位数与个位数均不为零 
			switch(hundreds){
     
				case(1) :printf("one hundred ");break;
				case(2) :printf("two hundred ");break;
				case(3) :printf("three hundred ");break;
				case(4) :printf("four hundred ");break;
				case(5) :printf("five hundred ");break;
				case(6) :printf("nin hundred ");break;
				case(7) :printf("one hundred ");break;
				case(8) :printf("one hundred ");break;
				case(9) :printf("one hundred ");break;
	        }
			
			switch(tens){
     
				case(1) :printf("and ");break;
				case(2) :printf("twenty ");break;
				case(3) :printf("thirty ");break;
				case(4) :printf("forty ");break;
				case(5) :printf("fifty ");break;
				case(6) :printf("sixty ");break;
				case(7) :printf("seventy ");break;
				case(8) :printf("eighty ");break;
				case(9) :printf("ninety ");break;
			}
			if (tens==1){
     //若十位数为1，如111 
				switch(units){
     
					case(1) :printf("eleven");break;
				    case(2) :printf("twelve");break;
				    case(3) :printf("thirteen");break;
				    case(4) :printf("fourteen");break;
				    case(5) :printf("fifteen");break;
				    case(6) :printf("sixteen");break;
				    case(7) :printf("seventeen");break;
				    case(8) :printf("eighteen");break;
				    case(9) :printf("nineteen");break;
				}
			}
			else switch(units){
     // 若十位数不为1和0，个位数不为零 
				case(1) :printf("one");break;
    			case(2) :printf("two");break;
    			case(3) :printf("three");break;
    			case(4) :printf("four");break;
    			case(5) :printf("five");break;
    			case(6) :printf("six");break;
    			case(7) :printf("seven");break;
    			case(8) :printf("eight");break;
    			case(9) :printf("nine");break;
			}					
		}
		
	    if(tens!=0&&units==0){
     //若十位不为零个位为0 
	    	switch(hundreds){
     
				case(1) :printf("one hundred and ");break;
				case(2) :printf("two hundred and ");break;
				case(3) :printf("three hundred and ");break;
				case(4) :printf("four hundred and ");break;
				case(5) :printf("five hundred and ");break;
				case(6) :printf("nin hundred and ");break;
				case(7) :printf("one hundred and ");break;
				case(8) :printf("one hundred and ");break;
				case(9) :printf("one hundred and ");break;
			}
		    
			switch(tens){
     
                case 1:printf("ten");break;
				case 2:printf("twenty");break;
                case 3:printf("thirty");break;
                case 4:printf("forty");break;
                case 5:printf("fifty");break;
                case 6:printf("sixty");break;
                case 7:printf("seventy");break;
                case 8:printf("eighty");break;
                case 9:printf("ninty");break;			
	        }
		}	
	}
}

运行截图：