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  1. #include<stdio.h>
  2. #include<string.h>
  3.  
  4. int main()
  5. {
  6.     char line[100];
  7.     int len;
  8.  
  9.     // printf("enter a line: ");
  10.     gets(line);
  11.  
  12.     len = strlen(line);
  13.  
  14.     // check single line comment
  15.     if(line[0]=='/' && line[1]=='/')
  16.     {
  17.         printf("it is a comment\n");
  18.     }
  19.     // for multi line comment
  20.     else if(line[0]=='/' && line[1]=='*')
  21.     {
  22.         if(line[len-1]=='/' && line[len-2]=='*')
  23.         {
  24.             printf("it is a comment\n");
  25.         }
  26.         else
  27.         {
  28.             printf("not a valid comment\n");
  29.         }
  30.     }
  31.     else
  32.     {
  33.         printf("it is not a comment\n");
  34.     }
  35.  
  36.     return 0;
  37. }
Success #stdin #stdout 0.01s 5324KB
comments (?)
stdin
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Hello World
stdout
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it is not a comment
https://ideone.com/EXxsuP
language:
C (gcc 8.3)
created:
7 days ago
visibility:
public

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