1 #include 
     
        2 #include 
      
         3 #include 
       
          4   5 struct Struction  6 {  7     double one;  8     int another;  9 }; 10  11 int CmpInt_1(const void *a,const void *b) 12 { 13     return *(int*)a - *(int*)b; 14 } 15  16 int CmpInt_2(const void *a,const void *b) 17 { 18     int *c = (int *)a; 19     int *d = (int *)b; 20  21     if(*(c+0) != *(d+0)) 22     { 23         return *(c+0) - *(d+0); 24     } 25     else 26     { 27         return *(c+1) - *(d+1); 28     } 29 } 30  31 int CmpStruction(const void *a,const void *b) 32 { 33     struct Struction *c = (struct Struction *)a; 34     struct Struction *d = (struct Struction *)b; 35  36     if(c->one != d->one) 37     { 38         return  c->one > d-> one ? 1 : 0; 39     } 40     else 41     { 42         return c->another > d-> another ? 1 : 0; 43     } 44 } 45  46 int CmpString(const void *a,const void *b) 47 { 48     return strcmp((char*)a,(char*)b); 49 } 50  51 int main() 52 { 53     int i,j; 54  55     //sort int* 56     int TestArray_1[10] = {
   718,224,3332,4443,55,31,66,79,90,7}; 57     qsort(TestArray_1,10,sizeof(int),CmpInt_1); 58  59     for(i = 0; i < 10; i ++) 60     { 61         printf("%d ",TestArray_1[i]); 62     } 63     printf("\n\n"); 64  65  66     //sort int** 67     int TestArray_2[5][2] = {
   {
   0,1},{
   2,7},{-4,99},{
   1,900},{
   2,423}}; 68     qsort(TestArray_2,5,sizeof(TestArray_2[0]),CmpInt_2); 69  70     for(i = 0; i < 5; i ++) 71     { 72         for(j = 0; j < 2; j ++) 73         { 74             printf("%d ",TestArray_2[i][j]); 75         } 76         printf("\n"); 77     } 78     printf("\n\n"); 79  80     //sort struct with two variable 81     struct Struction *TestArray_3 = malloc(5*sizeof(struct Struction)); 82     TestArray_3[0].one = 1.1; 83     TestArray_3[0].another = 18; 84     TestArray_3[1].one = 43; 85     TestArray_3[1].another = -99; 86     TestArray_3[2].one = 1.1; 87     TestArray_3[2].another = 900; 88     TestArray_3[3].one = 3; 89     TestArray_3[3].another = 6; 90     TestArray_3[4].one = 2; 91     TestArray_3[4].another = 4; 92  93     qsort(TestArray_3,5,sizeof(struct Struction),CmpStruction); 94     for(i = 0; i < 5; i ++) 95     { 96         printf("%lf %d\n",TestArray_3[i].one,TestArray_3[i].another); 97     } 98     printf("\n\n"); 99     100     //sort string101     char TestArray_4[5][100];102     strcpy(TestArray_4[0],"Asurudo");103     strcpy(TestArray_4[1],"Lokianyu");104     strcpy(TestArray_4[2],"Hatsune");105     strcpy(TestArray_4[3],"Miku");106     strcpy(TestArray_4[4],"Aqours");107     108     qsort(TestArray_4,5,sizeof(TestArray_4[0]),CmpString);109     for(i = 0;i < 5;i ++)110     {111         puts(TestArray_4[i]);112     }113     114     return 0;115 }