Driving is expensive. Write a program with two inputs, a car's miles/gallon and the cost of gas/gallon both represented as double variables, and output the total drive cost for 10 miles, 50 miles, and 400 miles, all on the same line, each separated by a single space. Output each floating-point value with two digits after the decimal point, which can be achieved by executing the command
cout << fixed << setprecision(2); once before all other cout statements. That is done only once in the code before any cout stamtent.

Ps:(when i run the program it says this-
Enter miles per Gallon:
Gas cost for ten miles :-nan
Gas cost for fifty miles :-nan
Gas cost for four hundred miles:-nan

Print "usernum1 is negative." if usernum1 is less than 0. end with newline. convert usernum2 to 0 if usernum2 is greater than 10. otherwise, print "usernum2 is less than or equal to 10.". end with newline

In vista and windows 7, the appearance and personalization option allows you to change the

Formatting rows and columns is similar to cell formatting. in an openoffice calc spreadsheet, you can format data entered into rows and columns with the of the rows and columns options. you can insert rows and columns into, or delete rows and columns from, a spreadsheet. use the insert or delete rows and columns option on the insert tab. alternatively, select the row or column where you want new rows or columns to appear, right-click, and select insert only row or only column options. you can hide or show rows and columns in a spreadsheet. use the hide or show option on the format tab. for example, to hide a row, first select the row, then choose the insert tab, then select the row option, and then select hide. alternatively, you can select the row or columns, right-click, and select the hide or show option. you can adjust the height of rows and width of columns. select row and then select the height option on the format tab. similarly, select column, then select the width option on the format tab. alternatively, you can hold the mouse on the row and column divider, and drag the double arrow to the position. you can also use the autofit option on the table tab to resize rows and columns.