View Compilation Error

0_0_26182225_24565.c
0_0_26182225_24565.c(2) : error C2061: 语法错误: 标识符“class”
0_0_26182225_24565.c(2) : error C2059: 语法错误:“;”
0_0_26182225_24565.c(2) : error C2054: 在“Point”之后应输入“(”
0_0_26182225_24565.c(58) : error C2061: 语法错误: 标识符“class”
0_0_26182225_24565.c(58) : error C2059: 语法错误:“;”
0_0_26182225_24565.c(58) : error C2054: 在“Graph”之后应输入“(”