getting values for a multidimensional array from users in C programming, we can use two for loops and scanf to get values.When I tried that in similar way in node javascript attempt was failed
I have tried something like this:
var readlineSync = require('readline-sync')
var arr = new Array();
console.log('enter aray values');
for (let i = 0; i < 6; i++){
for (let j = 0; j < 6; j++){
arr[i][j] = readlineSync.questionInt('')
}
}
console.log(arr);
and I got an error saying :
arr[i][j] = readlineSync.questionInt('')
^
TypeError: Cannot set properties of undefined (setting '0')
you can't set properties on undefined.
var readlineSync = require('readline-sync')
var arr = new Array();
console.log('enter aray values');
for (let i = 0; i < 6; i++) {
for (let j = 0; j < 6; j++) {
arr[i] = [];
arr[i][j] = readlineSync.questionInt('')
}
}
console.log(arr);
The error describes that arr[i] is undefined, which means that no properties can be set on it.
Each dimension of the multidimensional array should be created in each iteration of the loop:
for (let i = 0; i < 6; i++) {
// 👇 initialize the dimension as an empty array
arr[i] = new Array();
for (let j = 0; j < 6; j++) {
arr[i][j] = readlineSync.questionInt('')
}
}