C++程序：计算正整数数量

#include\u003ciostream\u003e\nusing namespace std;\n\nint main() {\n int num;\n int count = 0;\n\n while(cin \u003e\u003e num \u0026\u0026 num != 0) {\n if(num \u003e 0) {\n count++;\n }\n }\n\n cout \u003c\u003c count \u003c\u003c endl;\n\n return 0;\n}