View Compilation Error

0_0_1879709_26054.c: In function `main':
0_0_1879709_26054.c:6: error: `true' undeclared (first use in this function)
0_0_1879709_26054.c:6: error: (Each undeclared identifier is reported only once
0_0_1879709_26054.c:6: error: for each function it appears in.)
0_0_1879709_26054.c:14: error: 'for' loop initial declaration used outside C99 mode
0_0_1879709_26054.c:20: error: redefinition of 'i'
0_0_1879709_26054.c:14: error: previous definition of 'i' was here
0_0_1879709_26054.c:20: error: 'for' loop initial declaration used outside C99 mode
0_0_1879709_26054.c:22: error: 'for' loop initial declaration used outside C99 mode