Code: C

200 words — source: monkeytypegame/monkeytype (GPL-3.0)

auto break case char const continue default do double else enum extern float for goto if inline int long register restrict return short signed sizeof static struct switch typedef union unsigned void volatile while _Decimal128 _Decimal32 _Decimal64 _Generic #if #elif #else #endif #ifdef #ifndef #elifdef #elifndef #define #undef #include #line #error #warning #pragma defined __has_c_attribute _Pragma asm fortran EDOM EILSEQ ERANGE errno assert static_assert imaginary complex int8_t int16_t int32_t int64_t int_fast8_t int_fast16_t int_fast32_t int_fast64_t int_least8_t int_least16_t int_least32_t int_least64_t intmax_t intptr_t uint8_t uint16_t uint32_t uint64_t uint_fast8_t uint_fast16_t uint_fast32_t uint_fast64_t uint_least8_t uint_least16_t uint_least32_t uint_least64_t uintmax_t uintptr_t FILE stdin stdout stderr fopen fopen_s freopen freopen_s fclose fflush setbuf setvbuf fgetc getc fputc putc scanf fscanf sscanf printf fprintf sprintf EOF NULL malloc calloc realloc free aligned_alloc abort exit quick_exit unreachable system getenv signal raise setjmp longjmp rand srand qsort bsearch tolower toupper atof atoi atol atoll strtol strtoll strtoul strtoull strtof strtod strtold strcpy strncpy strcat strncat strlen strcmp strncmp strcoll strchr strrchr strspn strcspn strpbrk strstr strtok memchr memcmp memset memcpy memmove abs div exp log pow sqrt sin cos tan asin acos atan sinh cosh tanh asinh acosh atanh ceil floor round INFINITY NAN