View Compilation Error

0_0_36843730_5549.c: In function 'main':
0_0_36843730_5549.c:24:8: error: 'k' undeclared (first use in this function)
   for( k=0;k<number;k++)
        ^
0_0_36843730_5549.c:24:8: note: each undeclared identifier is reported only once for each function it appears in