A program reads data from a text file and stores it in a stack. The stack Stack is stored as a 1D array of up to 20 elements. The pointer TopOfStack stores the index of the last element stored in the stack. The function Push () takes a string parameter and attempts to store it on the stack. The function returns -1 if the stack is full. The function returns 1 if the parameter is successfully pushed onto the stack. Write program code for Push ( )

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