Question { Persistent, 10289 }

swap two integer variables without using a third temporary
variable?

Answer

i'll only give u logic #include
void main() { int a=10,b=20;
printf("b4 swap:a=%d b=%d",a,b);
a=a+b;b=a-b;a=a-b; printf("aftr
swap:a=%d b=%d",a,b); }
from-onkar.koparde@gmail.com

Is This Answer Correct ?

2 Yes

4 No

Question { 3363 }

what is putchar() and getchar()?????

Answer

putchar()
it writes a character to the specified file or string
it returns a character
getchar()
it reads character from the specified file or reads
a single character from a given string.