View Compilation Error

0_0_34893226_14868.c: In function 'main':
0_0_34893226_14868.c:8:3: error: expected ';' before 'int'
   int a,b,c;
   ^
0_0_34893226_14868.c:9:3: error: 'c' undeclared (first use in this function)
   c=(AS+BS)%60;
   ^
0_0_34893226_14868.c:9:3: note: each undeclared identifier is reported only once for each function it appears in
0_0_34893226_14868.c:10:3: error: 'b' undeclared (first use in this function)
   b=(AM+BM)%60+(AS+BS)/60;
   ^
0_0_34893226_14868.c:11:3: error: 'a' undeclared (first use in this function)
   a=AH+BH+(AM+BM)/60;
   ^