xxXYPD - Online C Compiler & Debugging Tool

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

int main(){
    int i,j,k=1;
    int a,b;
    int **mat;

    scanf("%d %d",&a,&b);

    mat = (int**)malloc(sizeof(int*)*a);
    for(i=0;i<a;i++){
        mat[i] = (int*)malloc(sizeof(int)*b);
    }

    for(i=0;i<a;i++){
        for(j=0;j<b;j++){
            mat[i][j] = k;
            k++;
            printf("%d ",mat[i][j]);
        }
        printf("\n");
    }

    for(i=0;i<a;i++){
        free(mat[i]);
    }
    free(mat);

    return 0;
}