错误解释
CompileError!
编译信息
main.c: In function \xe2\x80\x98main\xe2\x80\x99:\nmain.c:9:9: error: array size missing in \xe2\x80\x98arr\xe2\x80\x99\n 9 | int arr[];\n | ^~~\nmain.c:12:9: warning: ignoring return value of \xe2\x80\x98scanf\xe2\x80\x99 declared with attribute \xe2\x80\x98warn_unused_result\xe2\x80\x99 [-Wunused-result]\n 12 | scanf("%d",&arr[i]);\n | ^~~~~~~~~~~~~~~~~~~\n