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  1.     #include <stdio.h>
  2.     #include <ctype.h> /* for isdigit(c), etc. */
  3.  
  4.     #define MAX 10
  5.     #define SIZE 15
  6.  
  7.     int getint(int *pn);
  8.  
  9.     int main(void){
  10.     	int n, k;
  11.     	int array[SIZE];
  12.  
  13.     	for(n = 0; n < SIZE && getint(&array[n]) != EOF; n++)
  14.     		;
  15.     	for(k = 0; k < n; k++)
  16.     		printf("%d\n", array[k]);
  17.     	scanf("%d", &k);
  18.     }
  19.  
  20.     int getch(void);
  21.     void ungetch(int c);
  22.  
  23.  
  24.     int getint(int *pn)
  25. {
  26. 	int c, sign;
  27.  
  28. 	*pn = 0;
  29. 	while (isspace(c = getch()))
  30. 		;
  31. 	if (!isdigit(c) && c != EOF && c != '+' && c != '-') {
  32. 		/* ungetch(c);*/ /* if returned to input we fill the array */
  33. 		return 0;
  34. 	}
  35. 	sign = (c == '-') ? -1 : 1;
  36. 	if (c == '+' || c == '-') {
  37. 		c = getch();
  38. 		if (!isdigit(c)) {
  39. 			ungetch(sign == 1 ? '+' : '-');
  40. 			return 0;
  41. 		}
  42. 	}
  43. 	while (isdigit(c)) {
  44. 		*pn = 10 * *pn + (c - '0');
  45. 		c = getch();
  46. 	}
  47. 	*pn *= sign;
  48. 	if (c != EOF)
  49. 		ungetch(c);
  50.  
  51. 	return c;
  52. }
  53.  
  54.     int bufp = 0;
  55.     int buf[MAX];
  56.  
  57.     int getch(void)
  58.     {
  59.     	return bufp > 0 ? buf[--bufp] : getchar();
  60.     }
  61.  
  62.     void ungetch(int c)
  63.     {
  64.     	if (bufp < MAX)
  65.     		buf[bufp++] = c;
  66.     }
Success #stdin #stdout 0s 2116KB
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https://ideone.com/JEbP5h
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

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