1 /* 2 * This simple classical example of recursion is useful for 3 * testing stack backtraces and such. 4 */ 5 6 #include <stdio.h> 7 #include <stdlib.h> 8 9 #include "../lib/unbuffer_output.c" 10 11 int factorial (int); 12 13 int main(int argc,char ** argv,char ** envp)14main (int argc, char **argv, char **envp) 15 { 16 gdb_unbuffer_output (); 17 18 #ifdef FAKEARGV 19 printf ("%d\n", factorial (1)); /* commands.exp: hw local_var out of scope */ 20 #else 21 if (argc != 2) { 22 printf ("usage: factorial <number>\n"); 23 return 1; 24 } else { 25 printf ("%d\n", factorial (atoi (argv[1]))); 26 } 27 #endif 28 return 0; 29 } 30 factorial(int value)31int factorial (int value) 32 { 33 int local_var; 34 35 if (value > 1) { 36 value *= factorial (value - 1); 37 } 38 local_var = value; 39 return (value); 40 } /* commands.exp: local_var out of scope */ 41