fix compile error: first parameter of 'main' (argument count) must be of type 'int' #70
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when I compile c4 file in mac:
➜ c4 git:(master) gcc -v
Configured with: --prefix=/Applications/Xcode.app/Contents/Developer/usr --with-gxx-include-dir=/Applications/Xcode.app/Contents/Developer/Platforms/MacOSX.platform/Developer/SDKs/MacOSX.sdk/usr/include/c++/4.2.1
Apple clang version 12.0.5 (clang-1205.0.22.11)
Target: x86_64-apple-darwin20.6.0
Thread model: posix
InstalledDir: /Applications/Xcode.app/Contents/Developer/Toolchains/XcodeDefault.xctoolchain/usr/bin
➜ c4 git:(master) gcc -w c4.c
c4.c:333:5: error: first parameter of 'main' (argument count) must be of type 'int'
int main(int argc, char **argv)
^
1 error generated.
so, change int to signed fix this error