C programming Basic 1

(1). #include<stdio.h>
int main()
{
printf("The single quote \' is this ");
}

(2). #include<stdio.h>
int main()
{
printf("The single quote ' is this ");
}

Questions

(a)same output so why we take \' as escape sequence . It does not do anything special??

(b) Why did these characters call "escape sequences" . ?
Help plzz

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coder777 (8444)

It does not do anything special??

Not in this context. But you can use single quotes like here: char ch = '\'';

Why did these characters call "escape sequences" . ?

Just a wording. Look at this:
http://en.wikipedia.org/wiki/Escape_sequence

deendayal (17)

Thanks :)

MrHutch (1822)

Try these two instead:

printf("I want to print a " character");

printf("I want to print a \" character");

Note, even the syntax highlighting on this site shows the difference.

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deendayal (17)

#include<stdio.h>
void main()
{
printf("%d",printf("Computer"));
}

has a output = computer 8

Why ? please explain someone.
:confused:

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MrHutch (1822)

The general syntax of that looks off.

It's like you're trying to print a signed decimal integer variable, then trying to call printf again to print a string literal.

What exactly were you trying to do?

Were you trying to do this?:

printf("%s", "Computer");

I think that what you're effectively doing in your example is printing the value returned by the printf function. It returns 8 because printf will return the number of characters printed.

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shadow123 (127)

It outputs 8, because your code is currently printing the return value of the printf function call.

#include<stdio.h>
void main()
{
printf("%s","Computer");
}

This way your programm will output the string. %d tells the printf function that you want to output an integer, %s is a placeholder for string parameters.

deendayal (17)

ohh I got it . Every function returns a value . And printf function returns the value of the number of characters in the string which he has printed .. :)

Moschops (7244)

Every function returns a value .

Except the ones marked "void" at the start of the prototype :)

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deendayal (17)

hmm newbie me :(

Moschops (7244)

hmm newbie me :(

No shame in not knowing; only in feigning knowledge and in refusing to learn :)

deendayal (17)

Why dont we use '&' in the case of strings in function scanf ??

e.g. :-

scanf("%s",date);

here date is a character arraymeans string.

Plz help

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