尝试编译使用 GMP 的代码时出现此错误。有什么办法可以解决这个问题吗？我使用 Visual Studio 2010 命令提示符进行编译，这是我使用的命令：
cl testing.c gmp.lib
int main(void)
{
mpz_t a,b;
mpz_init(b);
mpz_init(a);
gmp_randstate_t rstate; // the problem arises when declaring this
}
testing.c
testing.c(9) : error C2275: 'gmp_randstate_t' : illegal use of this type as an e
xpression
c:\cygwin\home\administrator\ss\gmp.h(252) : see declaration of 'gmp_ran
dstate_t'
testing.c(9) : error C2146: syntax error : missing ';' before identifier 'state'
testing.c(9) : error C2065: 'state' : undeclared identifier
testing.c(11) : error C2065: 'state' : undeclared identifier
testing.c(11) : warning C4047: 'function' : '__gmp_randstate_struct *' differs i
n levels of indirection from 'int'
testing.c(11) : warning C4024: '__gmp_randinit_default' : different types for fo
rmal and actual parameter 1
testing.c(13) : error C2065: 'state' : undeclared identifier
testing.c(13) : warning C4047: 'function' : '__gmp_randstate_struct *' differs i
n levels of indirection from 'int'
testing.c(13) : warning C4024: '__gmpz_urandomb' : different types for formal an
d actual parameter 2
testing.c(14) : error C2065: 'state' : undeclared identifier
testing.c(14) : warning C4047: 'function' : '__gmp_randstate_struct *' differs i
n levels of indirection from 'int'
testing.c(14) : warning C4024: '__gmpz_urandomb' : different types for formal an
d actual parameter 2