diff options
| -rw-r--r-- | usr.bin/bc/USD.doc/bc | 16 |
1 files changed, 15 insertions, 1 deletions
diff --git a/usr.bin/bc/USD.doc/bc b/usr.bin/bc/USD.doc/bc index 91832f367fc..b1695909a96 100644 --- a/usr.bin/bc/USD.doc/bc +++ b/usr.bin/bc/USD.doc/bc @@ -1,4 +1,4 @@ -.\" $OpenBSD: bc,v 1.3 2003/10/21 11:58:46 otto Exp $ +.\" $OpenBSD: bc,v 1.4 2003/10/22 12:25:13 otto Exp $ .\" .\" Copyright (C) Caldera International Inc. 2001-2002. .\" All rights reserved. @@ -483,6 +483,7 @@ They are written in the following way .DS .ft B if(relation) statement +if(relation) statement else statement while(relation) statement for(expression1; relation; expression2) statement .ft P @@ -491,6 +492,7 @@ or .DS .ft B if(relation) {statements} +if(relation) {statements} else {statements} while(relation) {statements} for(expression1; relation; expression2) {statements} .ft P @@ -516,6 +518,9 @@ message, but \fS=\fP really will not do a comparison. The `if' statement causes execution of its range if and only if the relation is true. Then control passes to the next statement in sequence. +If an `else' branch is present, the statements in this branch are +executed if the relation is false. +The `else' keyword is a non-portable extension. .PP The `while' statement causes execution of its range repeatedly as long as the relation @@ -778,6 +783,7 @@ The following are reserved keywords: length return while quit for continue + else .fi .ft .NH 2 @@ -1082,6 +1088,14 @@ If statements .PP The substatement is executed if the relation is true. .NH 2 +If-else statements +.sp .5 +\fBif\|(\|\fIrelation\fB\|)\|\fIstatement\fB\|else\|\fIstatement\fR +.PP +The first substatement is executed if the relation is true, the second +substatement if the relation is false. +The if-else statement is a non-portable extension. +.NH 2 While statements .sp .5 \fBwhile\|(\|\fIrelation\fB\|)\|\fIstatement\fR |