cc1: warnings being treated as errors
prog.c: In function ‘main’:
prog.c:17: error: format ‘%u’ expects type ‘unsigned int’, but argument 2 has type ‘long long int’
prog.c:19: error: stray ‘\’ in program
prog.c:19: error: stray ‘\’ in program
prog.c:19: error: suggest parentheses around assignment used as truth value
prog.c:20: error: stray ‘\’ in program
prog.c:20: error: stray ‘\’ in program
prog.c:21: error: stray ‘\’ in program
prog.c:21: error: stray ‘\’ in program
prog.c:5: error: unused variable ‘j’