498369_0_0_5927.c 498369_0_0_5927.c(2) : error C2061: 语法错误 : 标识符“isprime” 498369_0_0_5927.c(2) : error C2059: 语法错误 : “;” 498369_0_0_5927.c(2) : error C2059: 语法错误 : “类型”