Program to print pattern

Program to print the following pattern (see below for the pattern). More patterns will be posted later.

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#include "stdio.h" #include "stdlib.h" #include "string.h" static void print_it(unsigned len) { if(!len) return; unsigned i; char *star, *buf, fmt[16]=""; star = malloc(sizeof(char) * len+1); if(!star) return; buf = malloc(sizeof(char) * len+1); if(!buf) return; for(i=0; i<len; i++) strcat(star, "*"); snprintf(fmt, 16, "%%%ds\n", len); for(i=len; i>0; i--){ strcpy(buf, star+i-1); printf(fmt, buf); } free(star); free(buf); return; } int main(int argc, char **argv) { print_it(12); return 0; }

[root@Imperfecto_1 ~]gcc run.c && ./a.out
           *
          **
         ***
        ****
       *****
      ******
     *******
    ********
   *********
  **********
 ***********
************

Valgrind Output

[root@Imperfecto_1 ~]valgrind ./a.out

==5472== HEAP SUMMARY:
==5472==     in use at exit: 0 bytes in 0 blocks
==5472==   total heap usage: 2 allocs, 2 frees, 26 bytes allocated
==5472== 
==5472== All heap blocks were freed -- no leaks are possible