c语言教程英文版讲义(六)

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1、Content★One-dimensionalArrays★Pointers★Call-byReference★ArraysandPointersChapter6★PointerArithmetic★ArraysasFunctionArgumentsArrays,PointersandStrings★DynamicMemoryAllocation★Strings★MultidimensionalArrays★ArraysofPointers★Argumentstomain()★FunctionsasArguments★ArraysofPointerstoFunction12One-dime

2、nsionalArraysOne-dimensionalArrays★Definition☆illegalintn;[]name[SIZE];scanf(‘%d”,&n);a0a[0]inta[10];inta[n];1a[1]definesanarrayaofsize10,thatis,ablock2a[2]☆legalof10consecutiveobjectsnameda[0],a[1],…,a[9].3a[3]#defineN64a[4]Thereisnottheelementa[10].inta[N];5a[5]Thenotationa[i

3、]referstothei-thelementofthearray.a(i)isillegal.34One-dimensionalArrays5.1One-dimensionalArrays★Reference★Initializationvoidmain(){inta[10]={1,2,3,4,5,6,7,8,9,10];inta[10],i;inta[]={1,2,3,4,5,6,7,8,9,10];for(i=0;i<10;i++)inta[10]={1,2};scanf(“%d”,&a[i]);for(i=0;i<10;i++)printf(“%3d”,a[i]);}561One-

4、dimensionalArraysOne-dimensionalArrays★Application01f[0]★Application1.ComputetheN-thFibonacci11f[1]☆voidmain()22f[2]☆voidmain(){intf0=1,f1=1,f,i,n;33f[3]{inti,n,f[20]={1,1};45f[4]scanf(“%d”,&n);scanf(“%d”,&n);5f[5]for(i=2;i<=n;i++)……...for(i=2;i<=n;i++){f=f0+f1;f[i]=f[i-2]+f[i-1];f0=f1;f1=f;}print

5、f(“%d”,f[n]);printf(“%d”,f);19f[19]f[19]}}78One-dimensionalArraysPointers★Applicationptrintvar;2000varvar=5;2.Theselectionsortfor(j=i+1;j

6、r;scanf(“%d”,.&a[i]);for(i=0;i

7、;12++*ip;Û*ip;ip*ip=0;xxx=0;xisnow0++x;1®011®12++(*ip);ip=&z[0];*ipipnowpointstoz[0]&z[0]Z[0]11122PointersPointers★Review(*ip)++;Û*ip;(*ip)++;•pointeristheaddressofvariablex++;•pointervariableisusedtostoretheaddr