[英]Simple C Program To Convert Two Digits Into Words
我要做的是編寫一個程序,其中您輸入兩個數字,然后將它們轉換為打印的單詞。 問題是這個程序在輸入兩位數后掛起,我不明白為什么。 任何和所有的幫助表示贊賞。 我是初學者,所有我可以用來解決這個問題基本上是if和switch。 再次感謝。
#include <stdio.h>
int main (void)
{
int firstNum, secondNum;
printf("Enter a two digit number: ");
scanf("%d%d", &firstNum,&secondNum);
if (firstNum == 1 && secondNum == 0){
printf("You entered the number ten\n");}
if (firstNum == 1 && secondNum == 1){
printf("You entered the number eleven\n");}
if (firstNum == 1 && secondNum == 2){
printf("You entered the number twelve\n");}
if (firstNum == 1 && secondNum == 3){
printf("You entered the number thirteen\n");}
if (firstNum == 1 && secondNum == 4){
printf("You entered the number forteen\n");}
if (firstNum == 1 && secondNum == 5){
printf("You entered the number fifteen\n");}
if (firstNum == 1 && secondNum == 6){
printf("You entered the number sixteen\n");}
if (firstNum == 1 && secondNum == 7){
printf("You entered the number seventeen\n");}
if (firstNum == 1 && secondNum == 8){
printf("You entered the number eighteen\n");}
if (firstNum == 1 && secondNum == 9){
printf("You entered the number nineteen\n");}
switch(firstNum){
case 2: printf("You entered the number twenty-");break;
case 3: printf("You entered the number thirty-");break;
case 4: printf("You entered the number forty-");break;
case 5: printf("You entered the number fifty-");break;
case 6: printf("You entered the number sixty-");break;
case 7: printf("You entered the number seventy-");break;
case 8: printf("You entered the number eighty-");break;
case 9: printf("You entered the number ninty-");break;
}
switch (secondNum){
case 1: printf("one.\n");break;
case 2: printf("two.\n");break;
case 3: printf("three.\n");break;
case 4: printf("four.\n");break;
case 5: printf("five.\n");break;
case 6: printf("six.\n");break;
}
return 0;
}
您的程序“掛起”,因為它正在等待第二個數字。
而不是4 2 ENTER ,鍵入4 2 f o o ENTER 。
您需要驗證scanf()
的返回值
if (scanf("%d%d", &firstNum, &secondNum) != 2) {
fprintf(stderr, "Oops, the scanf didn't read 2 numbers.\n");
} else {
/* continue with program */
/* you might as well see what scanf got from the input */
printf("scanf got the values %d and %d.\n", firstNum, secondNum);
}
一個非常簡單的代碼(特別適合初學者)。
#include <stdio.h>
#include <conio.h>
int main()
{
int num,n,r;
printf("Enter a two-digit number: ");
scanf("%d",&num);
n = num/10;
r = num%10;
switch(n)
{
case 1: switch(r)
{
case 0: printf("Ten");
break;
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;
case 2: printf("Twenty-");
break;
case 3: printf("Thirty-");
break;
case 4: printf("Fourty-");
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(n != 1)
{
switch(r)
{
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;
default: ;
}
}
getch();
}
您的程序從控制台讀取數據,控制台處於“熟”模式。 在此模式下,控制台收集輸入並允許用戶編輯它。 按Return或Enter鍵后,數據將發送到程序。
您想要的模式是“原始”模式。 有多種方法可以進入原始模式,但這取決於您的操作系統。
快速修復是輸入兩位數字並按Return鍵
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