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EMPS intranet

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Hi!   Hi!           Start main()

Try stepping through the code


  Value and type of last evaluated expression: Address of array element: Address of array elementx:  (none)

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Code

 Header...
int main(){
  ...
» int mychar; » while (1) { // Read a character from stdin » mychar=getc(stdin); » if (mychar==EOF) return 0; » printf("I read: \"%c\"\n", mychar); // Put it back » ungetc(mychar, stdin); // Read it again! » mychar=getc(stdin); » printf("Again I read: \"%c\"\n\n", mychar); }
}
Memory

main()

128
129
130
131
mychar = 1

NB: the actual memory address of each variable is the
address shown plus 4292252520 (0xFFD69368).

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.

Input was:

abc

Show output (Before looking at the output, work out what you think it put should be and see if you are right.)

Output

I read: "a"
Again I read: "a"

I read: "b"
Again I read: "b"

I read: "c"
Again I read: "c"

I read: "
"
Again I read: "
"

                                                                                                                                                                                                                                                                       

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