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  1. #include<stdio.h>
  2. #define MAXLINE 1000
  3. void reverse(char*);
  4. int getlen(char*,int);
  5. void main()
  6. {
  7.     int i=0;
  8.     char line[MAXLINE] = "backwards\n";
  9.     printf("\nEnter anything\n");
  10.     //while((getlen(line,MAXLINE))>1)
  11.    // {
  12.         printf("%s",line);//problem here
  13.         reverse(line);
  14.         printf("%s",line);//problem here
  15.     //}
  16.  
  17. }
  18. int getlen(char line[],int len)
  19. {
  20.     int c,i=0;
  21.     while((c=getchar())!=EOF && c!='\n' && (i<(len-2)))//last two for \n and \0
  22.     {
  23.         line[i]=c;
  24.         ++i;
  25.     }
  26.     if(c=='\n')
  27.         {
  28.             line[i]=c;
  29.             ++i;
  30.         }
  31.  
  32.     line[i]='\0';
  33.     return(i);//returns 1 if nothing is written
  34. }
  35. void reverse(char line[])
  36. {
  37.     int i=0,j=0;
  38.     char temp;
  39.     while(line[i]!='\0')
  40.     ++i;
  41.     --i;
  42.     if(line[i]=='\n')
  43.     --i;
  44.     while(j<i)
  45.     {
  46.         temp=line[j];
  47.         line[j]=line[i];
  48.         line[i]=temp;
  49.         ++j;
  50.         --i;
  51.  
  52.     }
  53.  
  54. }
Runtime error #stdin #stdout 0s 2160KB
comments (?)
stdin 
Standard input is empty
stdout 
Enter anything
backwards
sdrawkcab
https://ideone.com/55kLBT
language:
C (gcc 8.3)
created:
9 years ago
visibility:
public

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