Pascal's Triangle

Given numRows, generate the first numRows of Pascal's triangle.

For example, given numRows = 5,
Return

[     [1],    [1,1],   [1,2,1],  [1,3,3,1], [1,4,6,4,1]]

#include<stdio.h>#include<stdlib.h>int **generate(int numRows){    int **p=(int **)malloc(sizeof(int *)*numRows);    int i,j;    for(i=0;i<numRows;i++){        p[i]=(int *)malloc((i+1)*sizeof(int));        p[i][0]=p[i][i]=1;        for(j=1;j<i;j++) p[i][j]=p[i-1][j-1]+p[i-1][j];    }    return p;}void main(){    int n=4,i,j;    int **p=generate(n);    for(i=0;i<n;i++){        for(j=0;j<=i;j++){            printf("%d",p[i][j]);        }        printf("\n");    }}