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Explain this C code line per line please   #include   #include   void printArray(int**, int);

Explain this C code line per line please   #include   #include   void printArray(int**, int);

Database System Concepts
Database System Concepts
7th Edition
ISBN:9780078022159
Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan
Chapter1: Introduction
Section: Chapter Questions
Problem 1PE
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Question

Explain this C code line per line please

 

#include <stdio.h>

 

#include <malloc.h>

 

void printArray(int**, int);

 

int main() {

 

int i = 0, j = 0, n = 5;

 

int **arr = (int**)malloc(n * sizeof(int*));

 

for(int i=0;i<n;i++){

 

*(arr+i) = (int*)malloc(n*sizeof(int));

 

}

 

for(i=0;i<n;i++){

 

for(int j=0;j<n;j++){

 

*(*(arr+i) + j) = 0;

 

}

 

}

 

printArray(arr, n);

 

for(i=0;i<n;i++){

 

*( *(arr + i) + i) = i+1;

 

}

 

printArray(arr,n);

 

return 0;

 

}

 

void printArray(int ** array, int size) {

 

 

 

int i,j;

 

for(i = 0;i<size;i++){

 

for(j=0;j<size;j++){

 

printf("%d ", *( *(array + i) + j));

 

}

 

printf("\n");

 

}

 

printf("\n");

 

} 

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