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C Language > Learn C Language > Write a C program to swap two numbers without using...
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Write a C program to swap two numbers without using 3rd variable?

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#include<stdio.h> int main() { int a, b; printf("Enter two numbers:"); scanf("%d %d", &a, &b); a=a+b; b=a-b; a=a-b; printf("\nAfter swap a=%d b=%d",a,b); return 0; }
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  1. #include<stdio.h>
  2. int main()
  3. {
  4. int a, b;
  5. printf("Enter two numbers:");
  6. scanf("%d %d", &a, &b);
  7. a=a+b;
  8. b=a-b;
  9. a=a-b;
  10. printf("\nAfter swap a=%d b=%d",a,b);
  11. return 0;
  12. }

 

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