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  1. #include <stdio.h>
  2. #include <string.h>
  3. #include <math.h>
  4. #define  TRUE 0
  5. #define  FALSE 1
  6.  
  7. void main(void){
  8.  
  9. 	char szraw[10];
  10. 	char tmp;
  11.  
  12. 	//TRUE负数，FALSE正数
  13. 	int minus = FALSE;
  14.  
  15. 	int idx = 0,iret = 0, len = 0;
  16.  
  17. 	printf("请输入数字:");
  18. 	scanf("%s",&szraw);
  19.  
  20. 	len = strlen(szraw);
  21. 	do 
  22. 	{
  23. 		tmp = szraw[idx];
  24. 		if(idx == 0 && tmp == '-'){
  25. 			minus = TRUE;
  26. 			len -= 1;
  27. 			idx += 1;
  28. 			continue;
  29. 		}
  30.  
  31. 		// 负数
  32. 		if(minus ==TRUE)
  33. 			iret += (tmp-'0') * pow(10.0, len-idx++);
  34. 		//正数
  35. 		if( minus == FALSE)
  36. 			iret += (tmp-'0') * pow(10.0, len-idx++-1);
  37.  
  38. 	} while (szraw[idx] !='\0');
  39.  
  40. 	if(minus == TRUE) iret = -iret;
  41. 	printf("%d\n",iret);
  42.  
  43. }
  44.  
Runtime error #stdin #stdout 0s 4544KB
comments (?)
stdin
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-1234
stdout
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请输入数字:-1234
https://ideone.com/sXagT9
language:
C (gcc 8.3)
created:
5 years ago
visibility:
public

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