(Solved) : Write C Code Program Open File Named Testdat Convert Lower Case Letters File Corresponding Q43918968 . . .
Write a C code program to open a file named“test.dat”, convert all lower-case letters in the file to thecorresponding upper-case ones, and convert all upper-case lettersto the corresponding lower-case ones, and finally write theconverted letters back to file “test.dat”. Suppose the file storesat most 100 letters.
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