Code Quality

$ gcov echo.c  84.62% of 13 source lines executed in file echo.cCreating echo.c.gcov.

The results indicate that our test coverage is not complete: Two code lines were never executed. The generated file echo.c.gcov is an annotated listing of the source code. On the left of each source code line is the number of times the line was executed. Lines that were never executed are marked with hash (#) signs; these are the lines our test case did not cover:

     1   if (*++argv && !strcmp(*argv, "-n")) {######           ++argv;######           nflag = 1;         }         else     1           nflag = 0;     3   while (*argv) {     2           (void)printf("%s", *argv);     2           if (*++argv)     1                   putchar(' ');         }     1   if (!nflag) ...