C

dynamic 2d arr in c

#include <stdio.h>
#include <stdlib.h>

int main(void){
    int i, j, col = 3, row = 4;

	/* create dynamic 2d arr (matrix) */
  
    int **m = (int**)malloc(col * sizeof(int)); 
    for(int i = 0; i < col ; i++){
        m[i] = (int*)malloc(row * sizeof(int));
    }
  	
  	/* after usage free it */
  
    for (int i = 0; i < row; i++){
        free(m[i]);
    }
    free(m);
}

2d array in c

#include <stdio.h>
int main(){
    int scores[3][3],i,j;
    for(i=0;i<3;i++)
    {
        for(j=0;j<3;j++)
        {
            printf("a[%d][%d] = ",i,j);
            scanf("%d",&scores[i][j]);
        }
    }

printf("
 Matrix view: 
");
for (i=0;i<3;i++)
{
    for (j=0;j<3;j++){
        printf("%d	",scores[i][j]);
    }
    printf("
");
}
}

2D Array In C

// Array of size n * m, where n may not equal m
for(j = 0; j < n; j++)
{
    for(i = 0; i < m; i++)
    {  
        array[i][j] = 0;
    }
}