initialize an array in c++
int nums[100] = {0}; // initiallize all values to 0 int nums[5] = {1,2,3,4,5}; // type name[size] = {values};
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array initialization declaration c++
//Arrays only declaration int tab[3][4]; //Arrays declaration with initialization int tab[3][4] = { {0,1,2,3}, {4,5,6,7}, {8,9,10,11} };
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how to initialize array with new in c++
int* a = NULL; // Pointer to int, initialize to nothing. int n; // Size needed for array cin >> n; // Read in the size a = new int[n]; // Allocate n ints and save ptr in a. for (int i=0; i<n; i++) { a[i] = 0; // Initialize all elements to zero. } . . . // Use a as a normal array delete [] a; // When done, free memory pointed to by a. a = NULL; // Clear a to prevent using invalid memory reference.
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