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  1. #include<stdio.h>
  2. int main()
  3. {
  4.  char str1[10];
  5.  char temp;
  6.  
  7.  char *sptr1;
  8.  char *sptr2;
  9.  int len;
  10.  printf("Enter a string:\n");
  11.  scanf("%s",str1);
  12.  sptr1=str1;
  13.  sptr2=str1;
  14.  while(*sptr1!='\0')
  15.  {
  16.   sptr1++;
  17.  }
  18.  len=sptr1-str1;
  19.  printf("Length of the string:%d\n",len);
  20.  sptr1--;
  21.  while(len>0)
  22.  {
  23.   temp=*sptr1;
  24.   *sptr1=*sptr2;
  25.   *sptr2=temp;
  26.  
  27.   sptr1--;
  28.   sptr2++;
  29.   len=len-2;
  30.  }
  31.   printf("%s\n",str1);
  32.  }
Success #stdin #stdout 0s 9424KB
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stdin
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aiaz
stdout
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Enter a string:
Length of the string:4
zaia
https://ideone.com/WAnQLi
language:
C99 (gcc 8.3)
created:
5 years ago
visibility:
public

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