View Compilation Error

0_0_7206177_9037.c: In function `main':
0_0_7206177_9037.c:14: error: `d1' undeclared (first use in this function)
0_0_7206177_9037.c:14: error: (Each undeclared identifier is reported only once
0_0_7206177_9037.c:14: error: for each function it appears in.)
0_0_7206177_9037.c:21: error: subscripted value is neither array nor pointer
0_0_7206177_9037.c:21: error: subscripted value is neither array nor pointer
0_0_7206177_9037.c:25: error: `d2' undeclared (first use in this function)