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  1. #include <stdio.h>
  2. //#include <conio.h>
  3. int main() 
  4. {
  5. 	float num1,num2,Ans; 
  6. 	int key;
  7. 	printf("********Calcuators*******\n\n");
  8. 	printf("Enter num1:"); 
  9. 	scanf("%f",&num1);
  10. 	printf("Enter num2:"); 
  11. 	scanf("%f",&num2); 
  12. 	printf("Select:");
  13. 	scanf("%d",& key);  
  14. 	if(key==1)
  15. 	{
  16. 	//ฟังก์ชั่นคำสั่ง +
  17. 	Ans=num1+num2; 
  18. 	printf("\n Ans->[%.2f+%.2f]=%.2f",num1,num2,Ans);
  19. 	}
  20. 	else if(key==2)
  21. 	{
  22. 		//ฟังก์ชั่น ลบ -
  23. 		Ans = num1-num2;
  24. 		printf("\nAns->[%.2f-%.2f]=%.2f",num1,num2,Ans);
  25. 	}
  26. else
  27. 	{
  28. 		printf("ERROR");
  29. 		printf("Ans is %f",Ans);
  30. 		return 0;
  31. 	}
  32. }
  33.  
  34.  
Success #stdin #stdout 0.01s 5552KB
comments (?)
stdin
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Standard input is empty
stdout
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********Calcuators*******

Enter num1:Enter num2:Select:ERRORAns is 0.000000
https://ideone.com/zhARZc
language:
C (gcc 8.3)
created:
2 years ago
visibility:
public

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