?? print.c
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#/* * UNIX shell * * S. R. Bourne * Bell Telephone Laboratories * */#include "defs.h"CHAR numbuf[6];/* printing and io conversion */newline(){ prc(NL);}blank(){ prc(SP);}prp(){ IF (flags&prompt)==0 ANDF cmdadr THEN prs(cmdadr); prs(colon); FI}VOID prs(as) STRING as;{ REG STRING s; IF s=as THEN write(output,s,length(s)-1); FI}VOID prc(c) CHAR c;{ IF c THEN write(output,&c,1); FI}prt(t) L_INT t;{ REG INT hr, min, sec; t += 30; t /= 60; sec=t%60; t /= 60; min=t%60; IF hr=t/60 THEN prn(hr); prc('h'); FI prn(min); prc('m'); prn(sec); prc('s');}prn(n) INT n;{ itos(n); prs(numbuf);}itos(n){ REG char *abuf; REG POS a, i; INT pr, d; abuf=numbuf; pr=FALSE; a=n; FOR i=10000; i!=1; i/=10 DO IF (pr |= (d=a/i)) THEN *abuf++=d+'0' FI a %= i; OD *abuf++=a+'0'; *abuf++=0;}stoi(icp)STRING icp;{ REG CHAR *cp = icp; REG INT r = 0; REG CHAR c; WHILE (c = *cp, digit(c)) ANDF c ANDF r>=0 DO r = r*10 + c - '0'; cp++ OD IF r<0 ORF cp==icp THEN failed(icp,badnum); ELSE return(r); FI}?? 快捷鍵說明
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