C Programming

1.	What will be the output of the program? #include<stdio.h> #define JOIN(s1, s2) printf("%s=%s %s=%s \n", #s1, s1, #s2, s2); int main() { char *str1="India"; char *str2="BIX"; JOIN(str1, str2); return 0; }
	A. str1=IndiaBIX str2=BIX B. str1=India str2=BIX C. str1=India str2=IndiaBIX D. Error: in macro substitution

2.	What will be the output of the program? #include<stdio.h> #define CUBE(x) (x*x*x) int main() { int a, b=3; a = CUBE(b++); printf("%d, %d\n", a, b); return 0; }
	A. 9, 4 B. 27, 4 C. 27, 6 D. Error

3.	What will be the output of the program? #include<stdio.h> #define PRINT(int) printf("int=%d, ", int); int main() { int x=2, y=3, z=4; PRINT(x); PRINT(y); PRINT(z); return 0; }
	A. int=2, int=3, int=4 B. int=2, int=2, int=2 C. int=3, int=3, int=3 D. int=4, int=4, int=4

4.	What will be the output of the program? #include<stdio.h> #define SWAP(a, b) int t; t=a, a=b, b=t; int main() { int a=10, b=12; SWAP(a, b); printf("a = %d, b = %d\n", a, b); return 0; }
	A. a = 10, b = 12 B. a = 12, b = 10 C. Error: Declaration not allowed in macro D. Error: Undefined symbol 't'

5.	What will be the output of the program? #include<stdio.h> #define FUN(i, j) i##j int main() { int va1=10; int va12=20; printf("%d\n", FUN(va1, 2)); return 0; }
	A. 10 B. 20 C. 1020 D. 12