Answer Posted / it diploma student

let a and b be the variables

a=a+b
b=a-b
a=a-b

if we take a=5 and b = 7 then

a = 5+7 = 12
b = 12-7 = 5
a = 12-5 = 7

hence swaped...

What is the difference between variable declaration and variable definition in c?

1037

---

Does c have an equivalent to pascals with statement?

978

---

Write a program to print “hello world” without using semicolon?

1095

---

What is static volatile in c?

994

---

write a program to convert a expression in polish notation(postfix) to inline(normal) something like make 723+* (2+3) x 7 (not sure) just check out its mainly printing expression in postfix form to infix.

2801

---

Why we use conio h in c?

1179

---

How will you delete a node in DLL?

1262

---

How do you convert a decimal number to its hexa-decimal equivalent.Give a C code to do the same

1069

---

What is the hardest programming language?

1114

---

Are there constructors in c?

985

---

How do we make a global variable accessible across files? Explain the extern keyword?

1851

---

What is an array? What the different types of arrays in c?

1131

---

#include main() { char s[] = "Bouquets and Brickbats"; printf(" %c, ",*(&s[2])); printf("%s, ",s+5); printf(" %s",s); printf(" %c",*(s+2)); }

1110

---

What is dynamic variable in c?

1004

---

What is the difference between formatted&unformatted i/o functions?

1032

---