Practice C Preprocessor – What will be output of the following “c” code?
#include
#define max(a,b) (a>b)? a:b
int main()
{
int a,b; a=3; b=4;
printf("%d",max(a,b));
return 0;
}
Practice Strings – What is the output of the following problem ?
#include
int main()
{
char *str = "12345";
printf("%c %c %c
", *str, *(str++), *(str++));
return 0;
}
Practice Variable Number of Arguments – What will be output of the following “c” code?
#include
int main()
{
float i, j;
scanf(%f %f, &i, &j);
printf(%.2f %.3f, i, j);
return 0;
}
What will be the output for the give input 12.342 and 123.4568
Practice Structures, Unions, Enums – What is the output of the following program ?
#include
int main() {
union {
int a;
int b;
int c;
} u,v;
u.a = 10;
u.b = 20;
printf("%d %d
",u.a,u.b);
return 0;
}
Practice Strings – What is the output of the following problem ?
#include
int main()
{
char *c;
c = "Hello";
printf("%s
", c);
return 0;
}
Practice Functions – What is the output of the following problem ?
#include
int main()
{
int j;
for(j=0;j<3;j++)
foo();
return 0;
}
foo() {
static int i = 10;
i+=10;
printf("%d",i);
}
Practice Declarations and Initializations – What will be the output of the following program.
#include
int main() {
int i,j;
j = 10;
i = j++ - j++;
printf("%d %d", i,j);
return 0;
}
Practice Functions – What is the output of the following problem ?
#include
int main()
{
int j,ans;
j = 4;
ans = count(4);
printf("%d
",ans);
return 0;
}
int count(int i)
{
if ( i < 0)
return(i);
else
return( count(i-2) + count(i-1));
}
Practice Declarations and Initializations – What is the output of the following problem ?
#include
int main()
{
int i=4;
if(i=0)
printf("statement 1");
else
printf("statement 2");
return 0;
}
Practice Pointers – What will be output of following c program?
int main()
{
char *name = "name";
change (name);
printf ("%s", name);
return 0;
}
change (char *name)
{
char *nm = "newname";
name = nm;
}
Practice Pointers – Which are valid?
(i) pointers can be added.
(ii) pointers can be subtracted.
(iii) integers can be added to pointers.
Practice Structures, Unions, Enums – Which of these are valid declarations?
(i) union {
int i;
int j;
};
(ii) union u_tag {
int i;
int j;
};
(iii) union {
int i;
int j;
FILE k;
};
(iv) union {
int i;
int j;
}u;
Practice Input / Output – x = fopen (b, c) what is b?
Practice Arrays – What will be output of following c program?
int main ()
{
int i = 2;
twice (2);
printf ("%d", i);
}
twice (int i)
{
print ("Inside");
}
int i, b[] = {1, 2, 3, 4, 5}, *p;
p = b;
++*p;
p += 2;
What is the value of *p;
Practice Pointers – Which of the choices is true for the mentioned declaration?
const char *p;
and
char * const p;
Choose one of them: