How am I getting these outputs in C?

Question

1.00/5 (3 votes)

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C

main() {
   double=1/2.0-1/2;
   printf("d=%.21f",d);
}

Output: 0.50000000000000

shouldn't it be 0?

C

main() {
   int a=5;
   a=printf("Good")
   printf("%d",a);
}

Output:Good4

How come this?

C

main() {
   printf("\nab");
   printf("\bsi");
   printf("rha");
}

Output:hai

How?

Posted 21-Jun-15 7:17am

Member 11735960

Updated 21-Jun-15 7:43am

Andreas Gieriet

v2

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Andreas Gieriet 21-Jun-15 13:46pm

Homework assignment?
What does your text book tell about your questions?
You learn most if you do your homework yourself.
Regards
Andi

[no name] 21-Jun-15 20:14pm

They are all correct.

2 solutions

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KarstenK · Answer 1 · 2015-06-21T08:28:00

You should do some basic learning about C and especially the use of formatters in printf. It isnt a easy deal and needs some pratice.

Tip: The blackslash is a control character and leads to special behaviour. like "\n" means "new line" like hitting Enter.

Please read some hours and play around with that stuff. ;-)

Michael_Davies · Answer 2 · 2015-06-21T08:36:00

Solution 2

For your first problem. Look up operator precedence.

Posted 21-Jun-15 8:36am

Michael_Davies