Answers for "swap two nos without third var"

C
4

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;  
}   
Posted by: Guest on March-03-2021

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