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1.1 ! root 1: ! 2: ! 3: atol() General Function atol() ! 4: ! 5: ! 6: ! 7: ! 8: Convert ASCII strings to long integers ! 9: ! 10: lloonngg aattooll(_s_t_r_i_n_g) cchhaarr *_s_t_r_i_n_g; ! 11: ! 12: atol converts the argument string to a binary representation of a ! 13: long. string may contain a leading sign (but no trailing sign) ! 14: and any number of decimal digits. atol ignores leading blanks ! 15: and tabs; it stops scanning when it encounters any non-numeral ! 16: other than the leading sign, and returns the resulting long. ! 17: ! 18: ***** Example ***** ! 19: ! 20: ! 21: ! 22: main() ! 23: { ! 24: extern char *gets(); ! 25: extern long atol(); ! 26: char string[64]; ! 27: ! 28: ! 29: ! 30: for(;;) { ! 31: printf("Enter numeric string: "); ! 32: if(gets(string)) ! 33: printf("%ld\n", atol(string)); ! 34: else ! 35: break; ! 36: } ! 37: } ! 38: ! 39: ! 40: ***** See Also ***** ! 41: ! 42: atof(), atoi(), float, long, printf(), scanf() ! 43: ! 44: ***** Notes ***** ! 45: ! 46: No overflow checks are performed. atol returns zero if it ! 47: receives a string it cannot interpret. ! 48: ! 49: ! 50: ! 51: ! 52: ! 53: ! 54: ! 55: ! 56: ! 57: ! 58: ! 59: ! 60: ! 61: ! 62: ! 63: ! 64: COHERENT Lexicon Page 1 ! 65: ! 66:
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