Converting Random Numbers into Chars

[SherryAli]

Hi,
I am having difficulty completing 7th last line below I marked the line with an arrow. Please explain me what is required here.
Thanks

int main(void) {
  int MaxNum,     /*number of random nos to generate     */
    i,          /*index                                */
    value,
    RandNo,     /*a random number                      */
    ExitCode = 0 ; /*value to exit program with           */
  //----------------Start below here. To do: approximate lines of code = 7
  // seed the random number generator with value 1 for repeatability
  srand(1);
  //set MaxNum to 3
  MaxNum=3;
  //for MaxNum times do the following
  for(i=1;i<=MaxNum;i++){
    //let RandNo be the next random number
    RandNo = rand();
    //print the random number in the format shown
    printf("Random No %d is %d",i,RandNo);
    //let value be the conversion of the random number to range 0 to 5, inclusive
    value = RandNo%6;
    printf("From zero to 5 that is %d\n", value);//
    //let value be the conversion of the random number to range 'a' to 'z', inclusive
//--->    
    printf("From a to z that is %c\n", value);//
  //----------------------End here. Please do not remove this comment. Reminder: no changes outside the todo regions.
    printf("-------------------------------\n") ;
  }
  exit(ExitCode);
}

[Click_here]

ASCII values are numbers

Ascii Table - ASCII character codes and html, octal, hex and decimal chart conversion

For 'a', add 97 to 0.

The most common way is to add 'a'

Enjoy.

[SherryAli]

Sorry I don't understand can you explain in a bit more detail? please.

[Click_here]

I'm having trouble explaining it without giving the answer away...

Play around with this:

printf("\n\r>>%c", 0x61);

printf("\n\r>>%c", 0x62);

printf("\n\r>>%c", 0x63);

You can see that the characters are created by the value entered. (Look at the ASCII table)

If I wanted to get a random value between 5 and 15, I would get a random number mod 10 (that is 15-5), and then add 5 to the result.

To get a random letter between 'a' (which has the hex value of 0x61) and 'z' (which has the hex value of 0x7A)...

[SherryAli]

Ok I get it Thanks alot.