c語言程序設計課后習題答案第7篇

1、本文檔為精品文檔，如對你有幫助請下載支持，如有問題請及時溝通，謝謝支持!/* 練習 7-1*/#iiiclude<stdio.h>main() (int a10,n,sum=0,i;float ave;printfC'enter n:nH);scanff%d”,&n);printf(Menter %d ge zheng shu:n",n);fbr(i=0;i<n;i+) scanf(”%d”,&ai);sum=sum+ai;ave=1.0*sunin;printf(,lave=%.2fn,ave);產(chǎn)練習7-2*/#iiiclude<s

2、tdio.h>main() (mt a104ij;printfC'enter n:nH);scanff%d”,&n);printf(Menter %d ge zheng shu:n",n);fbr(i=0;i<n;i+) pnntf("第%d 個:W”,i+1);scanf(”%d”,&ai);printf(”倒序 An)while(ai?=0) prmtf(n%d'ai%10);ai=ai/10;pnntffn")；產(chǎn)練習7-3*/#iiiclude<stdio.h>main()int a習,x,i,k=0

3、;printf(Menter 5 ge zheng shu:iiH)；for(i=0;i<5;i+)scanf(”d&ai);printf(Menter x:nn);scanff%d”.&x);fbr(i=0;i<5;i+) if(ai=x) (printfC'xia biao wei: %dnu,i);k=l;)if(k=O)printf(”Not Found'iin);產(chǎn)練習7乂*/#iiiclude<stdio.h>main()(mt a 104Li.k=0,xjnax;printfC'enter n:nH);scanff%

4、d”,&n);printf(Menter %d ge zheng shu:n",n);fbr(i=0;i<n;i+)scanf(”d&ai);max=a0;fbr(i= 1 ;i<=n-l ;i+) if(niax<ai) (niax=ai;k=i;)piiiitf("max=%d xia biao=%d",niax,k);x=an-l;an-l=ak;ak=x;pnntffn")；fbr(i=0;i<n;i+)printff %d H,ai);pnntffn")；/*練習 7-11*/#iiiclude

5、<stdio.h>main()char str80;int ij,count=0;pnntf(”輸入一個以回車符結束的字符串An)1=0；while(stri=getcharO) i+;stri=,0,;printf(“再輸入一個字符字，str80=getcharQ;for(j=0j<=i-l;j-H-)if(str80=stij)count+;printf("%c字符在字符串中出現(xiàn)的次數(shù)為:%diT,str80,count);for(j=Oj<=i-l;j-H-) putchar(stij);pnn 氓“ n”)；/*習題七1*/#iiiclude<s

6、tdio.h>main() (int x,y,n.a 10 jaiiinanax;pnnrff 輸入 n:n) scanff%d”,&n);printf(“輸入d個整數(shù)An%);for(i=0;i<n;i+)scanfC%d”,&ai);niui=0;for(i=l;i<n;i+)if(ainni>ai)min=i;max=0;for(i=l;i<n;i+)if(amax<ai)max=i;x=ainin;ainin=a0;a0=x;y=amax;ainax=an-l;an-l=y;fbr(i=0;i<n;i+)prmtf(n%4d,a

7、i);pnntfC'W")；/*習題七2*/#iiiclude<stdio.h>main()(int x,n,a10,ij eiax;printf("輸入 n:n) scanfC%d”,&n);printf(“輸入%d個整數(shù)M%);fbr(i=O;i<n;i+)scanf(”%d”,&ai);fbr(i=l;i<n;i+) max=i-l;for(j=i;j<nJ+)if(amax<aj)max=j;x=amax;amax=ai-l;ag=x;fbr(i=O;i<n;i+) printf(n%4d,ai);

8、pnntffW")；/*習題七4*/#iiiclude<stdio.h>main()(int m,n,a66,i,j,b6=0;pnntff 輸入 m:nH);scanff%d”,&ni);printff1輸入 n:nH);scanfC%d”,&n);printf("輸入%<1 和(1 的矩陣 fbr(i=O;i<m;i+)for(j=Oj<nj+) scanfC%d”,&aij); bi=bi+aij;pnntf(Mshu chu:nM);for(j=Oj<nj+) pnntf("pnntffW&quo

9、t;)；printf(Mshu chu hang hefbr(i=O;i<m;i+)printf(n%4dn,bi);pnntffW")； 尸習題7.6*/#iiiclude<stdio.h>main()(chai- str80;mt ij;pnntf(”輸入一個以回車符結束的字符串:n) 1=0;wliile(stri=getcliai'O) !='n') i+;printf("倒序輸出氣”);foi(j=i-lj>=0j-) putchar(sti|j); pnn 氓“ n")； /*新 7.6*/#iiiclu

10、de<stdio.h>(int a10j,n;pnntf(”輸入整數(shù) n:ii");scanff%d&n);printf("輸入狽 個整數(shù)fbr(i=0;i<n;i+) scanfC'%d”,&ai);printf("倒序輸出fbr(i=0;i<n;i+)printf(M%5 dfan-l-i);pnntfC，nM);產(chǎn)習題7.7*/#iiiclude<stdio.h> main()chai- str80;int ij,count=0;pnntf(”輸入一個以回車符結束的字符串1=0；wliile(str

11、i=getcliai() !=,n')i+;pnntf(”輸出其中的大寫輔音字母:證)for(j=0;j<=i-l;j-H-)if(strj>='B'&&strj<='Z,&&strj !='E,&&strj !=T&&strj !=,O'&&strj !=V) (putchar(sti|j);count+;)printfC");printfC大寫輔音字母數(shù)量為:%dnH,count);/*習題 7.8*/#iiiclude<stdio.h>main()(chai- str80;int i,j,count=0;pnntf(”輸入一個以回車符結束的字符串1=0；wliile(stri=getcliai() !=,n&