#include int main(){ int i,a[10]={0,1,2,3,4,5,6,7}; for(i=1;i<9;i++) a[i]=a[i-1]+a[i+1]; printf("%d%dn",a[5],a[8]); return 0;}
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分析下列程序的执行结果。#include #define N 5int main(){ int i; for(i=1;i
分析下列程序的执行结果。#include int main(){ int counter=1; while(counter<=5) { printf("%d", counter ); counter++; }}
若输入:ABCdef<回车>,分析下列程序的执行结果。#include int main(){ char ch; while((ch=getchar())!='\n') { if(ch>='A'&&ch<='Z') ch=ch+32; else if(ch>='a'&&ch<='z') ch=ch-32; printf("%c",ch); }}
求输入的十个整数中正数的个数及其平均值,请完善程序。#include int main(){ int i,num=0,a; float sum=0; for(i=0; ____;____) { scanf("%d",&a); if(a>=0) { ____; ____; } } printf("%d plus integer's sum: %6.0f\n",num,sum); printf("Mean value:%6.2f\n",sum/num); return 0; }