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  1. #include <stdio.h>
  2.  
  3. int main(void) {
  4. 	double a, b;
  5. 	char operation;
  6.  
  7. 	while (scanf("%lf %c %lf ", &a, &operation, &b) == 3) {
  8. 		double result = 0;
  9. 		switch(operation) {
  10. 		case '+':
  11. 			result = a + b;
  12. 			break;
  13. 		case '-':
  14. 			result = a - b;
  15. 			break;
  16. 		case '*':
  17. 			result = a * b;
  18. 			break;
  19. 		case '/':
  20. 			result = a / b;
  21. 			break;
  22. 		default:
  23. 			fprintf(stderr, "Unexpected operation: %c\n", operation);
  24. 			continue;
  25. 		}
  26. 		printf("%lg %c %lg = %lg\n", a, operation, b, result);
  27. 	}
  28.  
  29. 	return 0;
  30. }
  31.  
Success #stdin #stdout #stderr 0s 2116KB
comments (?)
stdin
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3.2+1.0
2.3-0.3
1.7e+3+-3.2e2
3.0*-3.0
0.2/0
0.2/2.0
33o-44
stdout
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3.2 + 1 = 4.2
2.3 - 0.3 = 2
1700 + -320 = 1380
3 * -3 = -9
0.2 / 0 = inf
0.2 / 2 = 0.1
stderr
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Unexpected operation: o
https://ideone.com/drXwHR
language:
C (gcc 8.3)
created:
7 years ago
visibility:
public

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