View Compilation Error

0_0_33660536_7918.c: In function 'main':
0_0_33660536_7918.c:9:9: error: expected expression before '/' token
         // 判断是否为闰年
         ^
0_0_33660536_7918.c:9:9: error: stray '\305' in program
0_0_33660536_7918.c:9:9: error: stray '\320' in program
0_0_33660536_7918.c:9:9: error: stray '\266' in program
0_0_33660536_7918.c:9:9: error: stray '\317' in program
0_0_33660536_7918.c:9:9: error: stray '\312' in program
0_0_33660536_7918.c:9:9: error: stray '\307' in program
0_0_33660536_7918.c:9:9: error: stray '\267' in program
0_0_33660536_7918.c:9:9: error: stray '\361' in program
0_0_33660536_7918.c:9:9: error: stray '\316' in program
0_0_33660536_7918.c:9:9: error: stray '\252' in program
0_0_33660536_7918.c:9:9: error: stray '\310' in program
0_0_33660536_7918.c:9:9: error: stray '\362' in program
0_0_33660536_7918.c:9:9: error: stray '\304' in program
0_0_33660536_7918.c:9:9: error: stray '\352' in program
0_0_33660536_7918.c:14:9: error: 'for' loop initial declarations are only allowed in C99 or C11 mode
         for (int i=0; i< month - 1; i++)
         ^
0_0_33660536_7918.c:14:9: note: use option -std=c99, -std=gnu99, -std=c11 or -std=gnu11 to compile your code