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i too recommend C Primer Plus by Stephen Prata. though i haven't mastered it, but i bought it long ago and still believe that it's one of the best C Books because it provides every thing in detail...

thank you Quzah. but, can you explain what stdin and ungetc? Upto this chapter, i haven't seen ungetc. I have just seen getc, getcha.

And, suppose, the user enter following line in the prompt:
...

plz help me. it is stucking in second getchar().



while((ch=getchar())!='#')
{
ch1 = ch;
ch2=getchar();
if(ch1=='a' && ch2=='b')
...

sorry, there should be %d, not %c. But, thank you DWKS too for letting idea to minimize the iterations.

i want to find factors of any given number. i am trying in the following way..how far is it right?



for(i=1; i<=num; i++)
{
if(num%i==0)
printf("Factor = %c",i);
}

sorry, u r interpreting wrongly. I am not a computer student nor it's a homework. I am just following book and learning C from that. And, what I am asking is WHAT I don't know, or don't know how to...

BUT, what if I haven't studied pointer, array and functions too. I've just finished studying loop and basic of C like getting characters or lines from key board, and counting them.

Isn't there...

i am thinking to use not strstr. suppose, i don't know about str. i just want to use one character at a time. how to remember previous character and current char?

techies,

i don't where to start to countr two characters in any patterns or from any words like "ei" from "Receive eieiten pooeesiec".

can you give some hints?