Swap using third variable

Swap without using third variable

// SWAPPING WITHOUT USING THIRD VARIABLE
#include<stdio.h>  
 int main()    
{    
int a=10, b=20;      
printf("Before swap a=%d b=%d",a,b);      
a=a+b;//a=30 (10+20)    
b=a-b;//b=10 (30-20)    
a=a-b;//a=20 (30-10)    
printf("\nAfter swap a=%d b=%d",a,b);    
return 0;  
}

Source: javatpoint.com

Swap 2 numbers without using 3rd variable

a=10;
b=20;
a=a+b;//a=30 (10+20)    
b=a-b;//b=10 (30-20)    
a=a-b;//a=20 (30-10)

Swap using third variable

//The code for a function to Swap two number with a temporary variable is as follows
#include<stdio.h>

void swapping(int, int);  //function declaration
int main()
{
    int a, b;

    printf("Enter values for a and b respectively: \n");
    scanf("%d %d",&a,&b);

    printf("The values of a and b BEFORE swapping are a = %d & b = %d \n", a, b);

    swapping(a, b);      //function call
    return 0;
}

void swapping(int x, int y)   //function definition
{
    int third;
    third = x;
    x    = y;
    y    = third;

    printf("The values of a and b AFTER swapping are a = %d & b = %d \n", x, y);
}

Source: scaler.com

Similar codes

0 vote120 views1 answer
Save text file c
C
0 vote145 views2 answers
Couldn't be accessed by user '_apt'. - pkgAcquire::Run
C
0 vote108 views1 answer
Addition in c
C
0 vote113 views2 answers
Command line arguments c
C
0 vote126 views1 answer
Bcd to char c
C
2 votes119 views1 answer
Size string C
C
0 vote127 views1 answer
PDO Crud
C
2 votes230 views1 answer
“ln: failed to create symbolic link '/etc/alternatives/java': File exists”
C
3 votes120 views1 answer
C remove last character from a string
C
1 vote116 views1 answer
Append to list in c
C