title: Simple C Program To Convert Two Digits Into Words
body: <p>What I am trying to do is to write a program wherein you input two digits and 
  then they are converted into words which gets printed. The problem is that this program 
  hangs after you input the two digits and I have no idea why. Any and all help is appreciated.
  I am a beginner and all I can use to solve this is basically if and switch. Thanks again.</p>
  
  <pre><code>#include &lt;stdio.h&gt;
  
  int main (void)
  {
      int firstNum, secondNum;
  
      printf("Enter a two digit number: ");
      scanf("%d%d", &amp;firstNum,&amp;secondNum);
  
      if (firstNum == 1 &amp;&amp; secondNum == 0){
              printf("You entered the number ten\n");}
      if (firstNum == 1 &amp;&amp; secondNum == 1){
                  printf("You entered the number eleven\n");}
      if (firstNum == 1 &amp;&amp; secondNum == 2){
                  printf("You entered the number twelve\n");}
      if (firstNum == 1 &amp;&amp; secondNum == 3){
                  printf("You entered the number thirteen\n");}
      if (firstNum == 1 &amp;&amp; secondNum == 4){
                  printf("You entered the number forteen\n");}
      if (firstNum == 1 &amp;&amp; secondNum == 5){
                  printf("You entered the number fifteen\n");}
      if (firstNum == 1 &amp;&amp; secondNum == 6){
                  printf("You entered the number sixteen\n");}
      if (firstNum == 1 &amp;&amp; secondNum == 7){
                  printf("You entered the number seventeen\n");}
      if (firstNum == 1 &amp;&amp; secondNum == 8){
                  printf("You entered the number eighteen\n");}
      if (firstNum == 1 &amp;&amp; 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;
  }
  </code></pre>