Reading from a file in c++

I need to modify this code, instead of asking the user for the matrix, it will read the matrix from a file called Data.txt. The matrix must be 4x4.

Parsing Method

Need a program that will read as a string that will display the number of letters, number of digits, and the number of spaces in a message. The returned values must an integer. The program should use VB.NET.

C++ array

Consider the C++ array int arr[] = (-15, 5, 35, -19, -12, 17, -4); int arrSize = sizeof(arr)/sizeof(int); (a) Declare the list object intList that holds the integers from the array arr. (b) Declare the iterator iter for an integer list. (c) Initialize the iterator iter to the beginning of the list intList. (d) Assume iter is set to the start of the list. iter++; iter++; // what value does iter point at? cout << *iter; // what is the output? iter = intList.end(); iter--; iter--; // what value does iter point at? cout << *iter; // what is the output? iter = intList.end(); iter++; // what value does iter point at? cout << *iter; // what is the output? ... click for more

C++ Trace the following code...

Trace the following code, and display the resulting elements in the list: int arr[] = (1, 2, 3, 4); int arrSize = sizeof(arr)/sizeof(int); list intList(arr, arr+arrSize); list::iterator iter = intList.begin(); int i; for (i=1; i <= arrSize; i++) intList.insert(iter++, i); Please provide a complete program if it makes sense.

Data Structures with C++ Using STL

What is the output from the following sequence of stack operations? stack intStack; int x, y = 3; intStack.push(8); intStack.push(9); intStack.push(y); x = intStack.top(); intStack.pop(); intStack.push(18); x = intStack.top(); intStack.pop(); intStackpush(22); while (!intStack.empty()) { y = intStack.top(); intStack.pop(); cout << y << " "; } cout << x << endl; Please provide a complete program if it makes sense.