C Interview Questions - 3

6. What will be printed as the result of the operation below:

main()
{
char s1[]=“MindgrillQ”;
char s2[]= “systems”;
printf(“%s”,s1);
}

Answer: MindgrillQ

7. What will be printed as the result of the operation below:

main()
{
char *p1;
char *p2;

p1=(char *)malloc(25);
p2=(char *)malloc(25);

strcpy(p1,”MindgrillQ”);
strcpy(p2,“systems”);
strcat(p1,p2);

printf(“%s”,p1);

}

Answer: MindgrillQsystems

8. The following variable is available in file1.c, who can access it?:

static int average;

Answer: all the functions in the file1.c can access the variable.

9. WHat will be the result of the following code?

#define TRUE 0 // some code

while(TRUE)
{
// some code
}

Answer: This will not go into the loop as TRUE is defined as 0.

10. What will be printed as the result of the operation below:

int x;
int modifyvalue()
{
return(x+=10);
}

int changevalue(int x)
{
return(x+=1);
}

void main()
{
int x=10;
x++;
changevalue(x);
x++;
modifyvalue();
printf("First output:%d\n",x);

x++;
changevalue(x);
printf("Second output:%d\n",x);
modifyvalue();
printf("Third output:%d\n",x);

}

Answer: 12 , 13 , 13