View Compilation Error

0_0_32688615_22747.c: In function 'main':
0_0_32688615_22747.c:9:13: error: 'i' undeclared (first use in this function)
         for(i=1; i<m; i++){
             ^
0_0_32688615_22747.c:9:13: note: each undeclared identifier is reported only once for each function it appears in