将一个整数转换为字符串

  

   

    

     

    
    

     

      #include <stdio.h>
     
    
   

    

     

    
    

     

      #include <string.h>
     
    
   

    

     

    
    

     

      #include <malloc.h>
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      void reverse(char *str)
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     
	char temp;
     
    
   

    

     

    
    

     
	char *last_char;
     
    
   

    

     

    
    

     
	
     
    
   

    

     

    
    

     
	for (last_char = str; *last_char != '\0'; last_char++)
     
    
   

    

     

    
    

     

      		;
     
    
   

    

     

    
    

     

      	last_char--;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
	while (str < last_char)
     
    
   

    

     

    
    

     

      	{
     
    
   

    

     

    
    

     

      		temp = *str;
     
    
   

    

     

    
    

     

      		*str++ = *last_char;
     
    
   

    

     

    
    

     

      		*last_char-- = temp;
     
    
   

    

     

    
    

     

      	}
     
    
   

    

     

    
    

     

      }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      char* itooa(int num)
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     
	int len = 0;
     
    
   

    

     

    
    

     
	char *s = NULL;
     
    
   

    

     

    
    

     
	int i=0,j;
     
    
   

    

     

    
    

     
	int sum = num;
     
    
   

    

     

    
    

     
	while (sum != 0)
     
    
   

    

     

    
    

     

      	{
     
    
   

    

     

    
    

     

      		sum /= 10;
     
    
   

    

     

    
    

     

      		len++;
     
    
   

    

     

    
    

     

      	}
     
    
   

    

     

    
    

     

      	s = (char *)malloc(len+1);
     
    
   

    

     

    
    

     
	while(num != 0)
     
    
   

    

     

    
    

     

      	{
     
    
   

    

     

    
    

     

      		j = num % 10;
     
    
   

    

     

    
    

     

      		num /= 10;
     
    
   

    

     

    
    

     

      		s[i] = j + '0';
     
    
   

    

     

    
    

     

      		i++;
     
    
   

    

     

    
    

     

      	}
     
    
   

    

     

    
    

     

      	s[i] = '\0';
     
    
   

    

     

    
    

     

      	reverse(s);
     
    
   

    

     

    
    

     
	return s;
     
    
   

    

     

    
    

     

      }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      int main()
     
    
   

    

     

    
    

     

      {
     
    
   

    

     

    
    

     
	int i;
     
    
   

    

     

    
    

     
	char *str;
     
    
   

    

     

    
    

     
	printf("请输入一个整数:");
     
    
   

    

     

    
    

     
	scanf("%d",&i);
     
    
   

    

     

    
    

     

      	str = itooa(i);
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
	printf("您输入的整数数转换为字符串是:%s\n",str);
     
    
   

    

     

    
    

     

       reverse(str);
     
    
   

    

     

    
    

     
	printf("将该字符串反转后的字符串是:%s\n",str);
     
    
   

    

     

    
    

     
	return 0;
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     

      }
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
 
     
    
   

    

     

    
    

     
 
     
    
  
 

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原文链接：blog.csdn.net/qq523176585/article/details/11760683