C语言程序改错练习题 输出前六行杨辉三角 含答案题库

答案：正确答案：8次答案：B答案：0答案：A答案：C答案：A答案;A答案：B答案：D/*------------------------------------------------------【程序改错】--------------------------------------------------------功能：以下程序输出前六行杨辉三角形,既111121133114641……------------------------------------------------------*/#include<stdio.h>voidmain(){staticinta[6][6];inti,j,k;/***********FOUND***********/for(i=1;i<=6;i++){for(k=0;k<10-2*i;k++)printf("");for(j=0;j<=i;j++){/***********FOUND***********/if(j==0&&j==i)a[i][j]=1;else/***********FOUND***********/a[i][j]=a[i-1][j-1]+a[i][j-1];printf("");printf("%-3d",a[i][j]);}/***********FOUND***********/printf("\t");}}/*------------------------------------------------【程序设计】--------------------------------------------------功能：从键盘输入一个大于3的整数，调用函数fun判断其是否素数，然后在main函数中输出相应的结论信息。例如：7saprime.8isnotaprime.请编写fun函数。素数是仅能被1和自身整除的数-------------------------------------------------*/#include<stdio.h>voidwwjt();intfun(intn){/**********Program**********//**********End**********/}main(){intm,flag;printf("inputaninteger:");scanf("%d",&m);flag=fun(m);if(flag)printf("%disaprime.\n",m);elseprintf("%disnotaprime.\n",m);wwjt();}voidwwjt(){FILE*IN,*OUT;intiIN,iOUT,i;IN=fopen("5.IN","r");if(IN==NULL){printf("PleaseVerifyTheCurrerntDir..itMayBeChanged");}OUT=fopen("5.out","w");if(OUT==NULL){printf("PleaseVerifyTheCurrentDir..itMayBeChanged");}for(i=0;i<10;i++){fscanf(IN,"%d",&iIN);iOUT=fun(iIN);fprintf(OUT,"%d\n",iOUT);}fclose(IN);fclose(OUT);}/*------------------------------------------------【程序设计】--------------------------------------------------功能：编写函数fun计算下列分段函数的值：x^2+x+6x<0且x≠-3f(x)=x^2-5x+60≤x<10且x≠2且x≠3x^2-x-1其它------------------------------------------------*/#include<stdio.h>voidwwjt();floatfun(floatx){/**********Program**********//**********End**********/}main(){floatx,f;printf("inputx=");scanf("%f",&x);f=fun(x);printf("x=%f,f(x)=%f\n",x,f);wwjt();}voidwwjt(){FILE*IN,*OUT;intn;floati;floato;IN=fopen("in.dat","r");if(IN==NULL){printf("ReadFILEError");}OUT=fopen("out.dat","w");if(OUT==NULL){printf("WriteFILE