View Compilation Error

0_0_1839188_1154.c: In function `main':
0_0_1839188_1154.c:15: error: `i' undeclared (first use in this function)
0_0_1839188_1154.c:15: error: (Each undeclared identifier is reported only once
0_0_1839188_1154.c:15: error: for each function it appears in.)
0_0_1839188_1154.c:18: error: 'for' loop initial declaration used outside C99 mode