error: How to solve stray ‘\342’ in program

I copied a relatively simple code from the Internet, and encountered the following problems when compiling:
Test_getopt.c :9:35: error: stray ‘\342’ in program
. C :9:35: error: stray ‘\200’ in program
. C :9:35: error: stray ‘\235’ in program
test_getopt.c:12:3: error: Stray ‘\342’ in program
test_getopt.c:12:3: error: stray ‘\200’ in program
test_getopt.c:12:3: error: stray ‘\230’ in program
test_getopt.c:12:3: error: stray ‘\230’ in program
test_getopt.c:12:3: error: Stray ‘\342’ in program
test_getopt.c:12:3: error: stray ‘\200’ in program
test_getopt.c:12:3: error: stray ‘\231’ in program
test_getopt.c:13:4: error: Stray ‘\342’ in program
test_getopt. C :13:4: error: stray ‘\200’ in program
Say, the reason for this problem is that the source code exists in Chinese characters, such as “”,, etc., it can be changed!


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