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  1. #include <stdio.h>
  2. #include <math.h>
  3.  
  4. int getDecimal();
  5. char hexNum[100];
  6.  
  7. int main(int argc, char **argv) {
  8. 	printf("Enter the hex number: ");
  9. 	int i = 0;
  10. 	char ch;
  11. 	while ((ch = getchar()) != '\n') {
  12. 		hexNum[i++] = ch;
  13. 	}
  14. 	hexNum[i] = '\0';
  15. 	printf("\nHexadecimal Number is: %s", hexNum);
  16. 	int n = getDecimal();
  17. 	printf("\nDecimal Number is: %d" + n);
  18. 	return 0;
  19. }
  20.  
  21. int getDecimal() {
  22. 	int var = 0;
  23. 	int index = 0;
  24. 	while (hexNum[index] != '\0') {
  25. 		var = 16 * var;
  26.  
  27. 		switch (hexNum[index]) {
  28. 		case 'a':
  29. 			var = var + 10;
  30. 			break;
  31. 		case 'b':
  32. 			var = var + 11;
  33. 			break;
  34. 		case 'c':
  35. 			var = var + 12;
  36. 			break;
  37. 		case 'd':
  38. 			var = var + 13;
  39. 			break;
  40. 		case 'e':
  41. 			var = var + 14;
  42. 			break;
  43. 		case 'f':
  44. 			var = var + 15;
  45. 			break;
  46. 		default:
  47. 			var=var+('0'-hexNum[index]);
  48. 			break;
  49. 		}
  50. 		++index;
  51. 	}
  52. 	return var;
  53. }
  54.  
Runtime error #stdin #stdout 0s 9432KB
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Standard output is empty
https://ideone.com/Epmupb
language:
C (gcc 8.3)
created:
8 years ago
visibility:
public

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