c语言long long类型赋值

long long unsigned int num = 20140701092715;

在C语言中编译器会把没有小数的数值常量默认为整形，这条语句编译器会报警告:

　　[[email protected] ~]# gcc -o test 1.c

　　1.c: In function ‘main’:

　　1.c:6: warning: integer constant is too large for ‘long’ type

为了标识是long long类型，处理方法：将20140701092715指定为long long unsigned类型:

long long unsigned int num = 20140701092715ULL;

转载于:https://www.cnblogs.com/chegnshi-coding/p/4457749.html