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Citicorp Placement Paper (Technical-C)

C questions

1. main()
{
int x=10,y=15;
x=x++;
y=++y;
printf(“%d %d\n”,x,y);
}
2. int x;
main()
{
int x=0;
{
int x=10;
x++;
change_value(x);
x++;
Modify_value();
printf(“First output: %d\n”,x);
}
x++;
change_value(x);
printf(“Second Output : %d\n”,x);
Modify_value();
printf(“Third Output : %d\n”,x);
}
Modify_value()
{
return (x+=10);
}
change_value()
{
return(x+=1);
}
3. main()
{
int x=20,y=35;
x = y++ + x++;
y = ++y + ++x;
printf(“%d %d\n”,x,y);
}
4. main()
{
char *p1=”Name”;
char *p2;
p2=(char *)malloc(20);
while(*p2++=*p1++);
printf(“%s\n”,p2);
}
5. main()
{
int x=5;
printf(“%d %d %d\n”,x,x<<2,x>>2);
}
6. #define swap1(a,b) a=a+b;b=a-b;a=a-b;
main()
{
int x=5,y=10;
swap1(x,y);
printf(“%d %d\n”,x,y);
swap2(x,y);
printf(“%d %d\n”,x,y);
}
int swap2(int a,int b)
{
int temp;
temp=a;
b=a;
a=temp;
return;
}
7. main()
{
char *ptr = “Ramco Systems”;
(*ptr)++;
printf(“%s\n”,ptr);
ptr++;
printf(“%s\n”,ptr);
}
8. [...]