Function pointer to create 10 X storage address, each address stored 100 4 bytes of data; The first address to store random data, the second address data is stored in the first address data on 1, the third address is stored in the second data plus 1

CodePudding user response:

 # include & lt; stdio.h> 
#include  
#include  
#include  
//function function pointer to create 10 X storage address, each address stored 100 4 bytes of data; The first address to store random data, the second address data is stored in the first address data on 1, the third address is stored in the second data plus 1 
Void fun () {
Int * * X; 
int i; 
Int j; 

X=(int) * * malloc (10 * sizeof (int *)); 
for (i=0; i<10; I++) {
[I]=(int *) X malloc (100 * sizeof (int)); 
For (j=0; j<100; J++) {
If (I==0) X [I] [j]=rand (); 
Else X [I] [j]=X [I - 1) [j] + 1; 
} 
} 
for (i=0; i<10; I++) {
For (j=0; j<3; J++) {
Printf (" % d ", [I] X [j]); 
} 
Printf ("... \n"); 
} 
for (i=0; i<10; I++) {
[I] free (X); 
} 
Free (X); 
} 
Int main () {
Srand (time (NULL)); 
Fun (); 
return 0; 
} 
//30177 23612 6502... 
//30178 23613 6503... 
//30179 23614 6504... 
//30180 23615 6505... 
//30181 23616 6506... 
//30182 23617 6507... 
//30183 23618 6508... 
//30184 23619 6509... 
//30185 23620 6510... 
//30186 23621 6511... 
//