#include <stdlib.h> #include <stdio.h> const char *strings[]={ /* some simple stuff */ "0", "1", "10", "100", "1000", "10000", "100000", "1000000", "10000000", "100000000", "1000000000", /* negative */ "-0", "-1", "-10", "-100", "-1000", "-10000", "-100000", "-1000000", "-10000000", "-100000000", "-1000000000", /* test base>10 */ "a", "b", "f", "g", "z", /* test hex */ "0x0", "0x1", "0xa", "0xf", "0x10", /* test octal */ "00", "01", "07", "08", "0a", "010", /* other */ "0x8000000", /* check overflow cases: (for 32 bit) */ "2147483645", "2147483646", "2147483647", "2147483648", "2147483649", "-2147483645", "-2147483646", "-2147483647", "-2147483648", "-2147483649", "4294967293", "4294967294", "4294967295", "4294967296", "4294967297", "-4294967293", "-4294967294", "-4294967295", "-4294967296", "-4294967297", /* bad input tests */ "", "00", "0x", "0x0", "-", "+", " ", " -", " - 0", }; int n_tests=sizeof(strings)/sizeof(strings[0]); void do_test(int base); void do_utest(int base); int main(int argc,char *argv[]) { do_test(0); do_test(8); do_test(10); do_test(16); do_test(36); do_utest(0); do_utest(8); do_utest(10); do_utest(16); do_utest(36); return 0; } void do_test(int base) { int i; long n; char *endptr; for(i=0;i<n_tests;i++){ n=strtol(strings[i],&endptr,base); printf("strtol(\"%s\",%d) len=%lu res=%ld\n", strings[i],base,(unsigned long)(endptr-strings[i]),n); } } void do_utest(int base) { int i; unsigned long n; char *endptr; for(i=0;i<n_tests;i++){ n=strtoul(strings[i],&endptr,base); printf("strtoul(\"%s\",%d) len=%lu res=%lu\n", strings[i],base,(unsigned long)(endptr-strings[i]),n); } }