View Compilation Error

0_0_9906026_30119.c: In function `sum':
0_0_9906026_30119.c:45: error: `le' undeclared (first use in this function)
0_0_9906026_30119.c:45: error: (Each undeclared identifier is reported only once
0_0_9906026_30119.c:45: error: for each function it appears in.)
0_0_9906026_30119.c:45: error: syntax error at end of input