Latest C Aptitude Question SOLUTION: write a C program two swap two numbers without using temporary variable??

• Placement Papers
• /
• C
• /
• Programming
• /
• Program

C Question Papers:

(#M40038298) C Programming question swapping Keep an EYE

write a C program two swap two numbers without using temporary variable??

Asked In C surya (9 years ago)

Unsolved Read Solution (12)

Is this Puzzle helpful?   (6)   (0) Submit Your Solution Program

Read Solution (12) :

harshvar  (9 years ago)

MAIN()
{
PRINTF("ENTER TOW NO")
SCANF("%d%d",&a &b
a=a+b;
b=a-b;
a=a-b;
getch
}
there is key problem so it is not error free but logic is same;

Is this solution Helpfull? Yes (11) | No (1)  

Amit Sharma  (9 years ago)

#include
int main(void)
{
int a,b;
printf("Enter two number");
scanf("%d%d",&a,&b);//a=10,b=20
a ^= b;//using XOR ^
b ^= a;
a ^= b;
printf("a=%d b=%d",a,b);//a=20,b=10
getch();
}

Is this solution Helpfull? Yes (5) | No   

Aashish Sawant  (9 years ago)

main()
{
printf("enter two number");
SCANF("%d%d",&a &b);
a=a*b;
b=a/b;
a=a/b;
}

Is this solution Helpfull? Yes (2) | No   

pavankumar  (9 years ago)

void main()
{
int a=5,b=6,temp;
a=temp;
b=a;
temp=b;
printf("swaping of two no");
scanf("%d%d%d",&a,&b,&temp);
}

Is this solution Helpfull? Yes (1) | No (4)  

vyshnavi  (9 years ago)

main()
{
int a,b;
printf("enter two numbers:");
scanf("%d%d",&a,&b);
a=a^b;
b=a^b;
a=a^b;
printf("%d%d",a,b);
getch();
}
Here a,b values converted to binary number and doing xor operation on two values....i think u can understand it....it is another way without using temporary variable...

Is this solution Helpfull? Yes (1) | No   

Babloo kumar  (9 years ago)

LOGIC....
a=a+b;
b=a-b;
a=a-b;

Is this solution Helpfull? Yes | No   

rajat  (9 years ago)

#include
#include
void main()
{
clrscr();
int a=10,b=20;
a=a+b;
b=a-b;
a=a-b;
printf("%d %d",a,b);
getch();
}

Is this solution Helpfull? Yes | No   

Ritesh Gupta  (9 years ago)

//Let a=1,b=2
a=b-a; //a=1
b=b-a; //b=1
a=a+b; //a=2
//a=2,b=1

Is this solution Helpfull? Yes | No   

Ritesh Gupta  (9 years ago)

#include

void main()
{
int a=10,b=20;
a=b-a;
b=b-a;
a=a+b;
printf("%d %d",a,b);
return 0;
}

Is this solution Helpfull? Yes | No   

javadala pratyusha  (9 years ago)

int main()
{
int a,b;
printf("nenter any 2 numbers");
scanf("%d%d",&a,&b);
printf("nbefore swapingn%d,%d"a,b);
a=a+b;
b=a-b;
a=a-b;
printf("nafter swapingn%d,%d",a,b);
}

Is this solution Helpfull? Yes | No   

Nitesh Kishore Kashi  (9 years ago)

#include
#include
void main()
{
int a=10,b=20;
clrscr();
a=a+b;
b=a-b;
a=a-b;
printf("%d %d",a,b);
getch();
}

Is this solution Helpfull? Yes | No   

brindhavetrivel  (8 years ago)

#include
int main(void)
{
int a,b;
printf("Enter two number");
scanf("%d%d",&a,&b);
b=a+b-(a=b);
printf("a=%d b=%d",a,b);
getch();
}

Is this solution Helpfull? Yes | No   

Please Login to Read Solution.