Copying again

#include <stdio.h>
void copy_arr(double source[], double target1[], int num);

int main(void){
    double source[][2]={{1,2},{3,90}};
    double target[2][2];

    int rows,cols;
    for (rows=0; rows<2; rows++){
        copy_arr(source, target, 4);

    }

    for(rows=0; rows<2; rows++){
        for(cols=0; cols<2; cols++){
            printf("%f  ", target[rows][cols]);
        }
        printf("\n");
    }
    return 0;
}

void copy_arr(double source[], double target1[], int num){
    int i;
    for(i=0; i<num; i++){
        target1[i]=source[i];
    }
}