Insert a kilobytes in a numeric string

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1 # include <stdio. h> 2 3 # include <string. h> 4 5 # include <stdlib. h> 6 7 8 9 10 void PrintString (char * p, char * In_num) 11 12 {13 14 int I = 0; 15 16 int lenth; 17 18 if (strlen (p) <4) 19 20 puts (In_num); 21 22 else 23 24 {25 26 lenth = strlen (p) % 3; 27 28 for (I = 0; p [I]! = '\ 0'; I ++) 29 30 {31 32 printf ("% c", p [I]); 33 34 if (I + 1) % 3 = lenth & p [I + 1]! = '\ 0') 35 36 printf ("% c", 44); 37 38} 39 40} 41 42} 43 44 int main (void) 45 46 {47 48 char * In_num, * str; 49 50 int I = 0; 51 52 In_num = (char *) malloc (sizeof (char *)); 53 54 str = (char *) malloc (sizeof (char *); 55 56 if (In_num = NULL) // check whether the allocation is successful; 57 58 {59 60 printf ("Can't get so far values. \ n "); 61 62 exit (1); 63 64} 65 66 printf (" Please input the num_string: \ n "); 67 68 gets (In_num); 69 70 strcpy (Str, In_num); 71 72 char * p; 73 74 char * n [2]; 75 76 p = strtok (str ,". "); 77 78 while (p) 79 80 {81 82 n [I ++] = p; 83 84 p = strtok (NULL ,". "); 85 86} 87 88 PrintString (n [0], In_num); 89 90 if (I = 2 & strlen (n [0])> = 4) 91 92 {93 94 printf (". "); 95 96 for (I = 0; n [1] [I]! = '\ 0'; I ++) 97 98 {99 100 printf ("% c", n [1] [I]); 101 102} 103 104} 105 106 printf ("\ n"); 107 108 free (In_num); // release; 109 110 free (str); // release; 111 112 getchar (); 113 114 return 0; 115 116}