将返回值类型由signed int改为int，符合ISO C标准，防止编译器报错

1 files changed, 5 insertions, 5 deletions

diff --git a/include/rtthread.h b/include/rtthread.h
index 83be7d1ebc..8089ca07de 100644
--- a/include/rtthread.h
+++ b/include/rtthread.h
@@ -537,14 +537,14 @@ void rt_components_board_init(void);
 #define rt_kprintf(...)
 #define rt_kputs(str)
 #else
-void rt_kprintf(const char *fmt, ...);
+int rt_kprintf(const char *fmt, ...);
 void rt_kputs(const char *str);
 #endif
 
-rt_int32_t rt_vsprintf(char *dest, const char *format, va_list arg_ptr);
-rt_int32_t rt_vsnprintf(char *buf, rt_size_t size, const char *fmt, va_list args);
-rt_int32_t rt_sprintf(char *buf, const char *format, ...);
-rt_int32_t rt_snprintf(char *buf, rt_size_t size, const char *format, ...);
+int rt_vsprintf(char *dest, const char *format, va_list arg_ptr);
+int rt_vsnprintf(char *buf, rt_size_t size, const char *fmt, va_list args);
+int rt_sprintf(char *buf, const char *format, ...);
+int rt_snprintf(char *buf, rt_size_t size, const char *format, ...);
 
 #if defined(RT_USING_DEVICE) && defined(RT_USING_CONSOLE)
 rt_device_t rt_console_set_device(const char *name);