foobar.c

foobar.c

#include <stdio.h>                                                                          
                                                                                            
main()                                                                                      
{                                                                                           
    int c;                                                                                  
                                                                                            
    while ((c = getchar()) != EOF) {                                                        
        if (c == '\t' || c == '\n')                                                         
            putchar('\n');                                                                  
    }                                                                                       
    putchar(c);                                                                             
}