program lx2 Var a,b,c:integer; Begin read(a,b); c:=a; a:=b; b:=c; writeln(a,b); End.哪里错了?急

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program lx2 Var a,b,c:integer; Begin read(a,b); c:=a; a:=b; b:=c; writeln(a,b); End.哪里错了?急
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program lx2 Var a,b,c:integer; Begin read(a,b); c:=a; a:=b; b:=c; writeln(a,b); End.哪里错了?急
program lx2 Var a,b,c:integer; Begin read(a,b); c:=a; a:=b; b:=c; writeln(a,b); End.
哪里错了?急

program lx2 Var a,b,c:integer; Begin read(a,b); c:=a; a:=b; b:=c; writeln(a,b); End.哪里错了?急
交换a与b?
writeln(a,‘ ’,b);
没有错啊~- -
除了没有关联文件,不过不用啊