View Compilation Error

175223_0_20770.c:2:19: iostream: No such file or directory
175223_0_20770.c:3: error: syntax error before "namespace"
175223_0_20770.c:6: error: syntax error before "isLetter"
175223_0_20770.c: In function `isLetter':
175223_0_20770.c:8: error: `true' undeclared (first use in this function)
175223_0_20770.c:8: error: (Each undeclared identifier is reported only once
175223_0_20770.c:8: error: for each function it appears in.)
175223_0_20770.c:8: error: `false' undeclared (first use in this function)
175223_0_20770.c: In function `main':
175223_0_20770.c:26: error: `true' undeclared (first use in this function)