Given the availability of an ifstream object named indata and an ofstream object named outdata, write the other statements necessary to read one integer from a file called currentsales and write twice its value into a file called projectedsales. Assume that this is the extent of the input and output that this program will do.

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This is the answer:

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double sales=0.0;

indata.open("currentsales");
outdata.open("projectedsales");

indata >> sales;
outdata << sales * 2.0;

indata.close();
outdata.close();