2D array values C++
Like this:
int main(){ int arr[2][5] = { {1,8,12,20,25}, {5,9,13,24,26} };}This should be covered by your C++ textbook: which one are you using?
Anyway, better, consider using std::vector or some ready-made matrix class e.g. from Boost.
The proper way to initialize a multidimensional array in C or C++ is
int arr[2][5] = {{1,8,12,20,25}, {5,9,13,24,26}};You can use this same trick to initialize even higher-dimensional arrays if you want.
Also, be careful in your initial code - you were trying to use 1-indexed offsets into the array to initialize it. This didn't compile, but if it did it would cause problems because C arrays are 0-indexed!
Just want to point out you do not need to specify all dimensions of the array.
The leftmost dimension can be 'guessed' by the compiler.
#include <stdio.h>int main(void) { int arr[][5] = {{1,2,3,4,5}, {5,6,7,8,9}, {6,5,4,3,2}}; printf("sizeof arr is %d bytes\n", (int)sizeof arr); printf("number of elements: %d\n", (int)(sizeof arr/sizeof arr[0])); return 0;}