利用c语言宏#的用法打日志并统计错误

#include <stdio.h>

typedef enum
{
ERROR_ONE,    // 0
ERROR_TWO,
ERROR_THREE,
ERROR_END
}E_ERROR_CODE;

unsigned long g_error_statistics[ERROR_END] = {0};

/* LOG 打印， # 直接常亮字符串替换 */
#define LOG_PRINT(ERROR_CODE)                                             \
do {                                                                      \
g_error_statistics[ERROR_CODE]++;                                     \
printf("[%s : %d], error is %s\n", __FILE__, __LINE__, #ERROR_CODE);  \
} while (0)

/* ERROR 公共前缀，传参时省略的写法, ## 直接展开拼接 */
#define LOG_PRINT_2(CODE)                                                        \
do {                                                                             \
g_error_statistics[ERROR_ ## CODE]++;                                        \
printf("[%s : %d], error is %s\n", __FILE__, __LINE__, "ERROR_" #CODE);      \
} while (0)

int main()
{
LOG_PRINT(ERROR_TWO);
LOG_PRINT_2(ONE);
for (unsigned int i = 0; i < ERROR_END; ++i) {
printf("error %u statistics is %lu \n", i, g_error_statistics[i]);
}
return 0;
}