C语言苏小红版第六章习题答案.docx

第六章习题1.（1）#includemain() int i,j,k; char space= ; for(i=1;i=4;i+) for(j=1;j=i;j+) printf(%c,space);for(k=1;k=6;k+) printf(*); printf(n); （2）#include main()int k = 4, n;for (n = 0; n k; n+)if (n % 2 = 0) continue;k-;printf(k = %d,n = %dn,k,n);（3）#include main() int k = 4, n;for (n = 0; n k; n+)if (n % 2 =0) break;k-;printf(k = %d, n = %dn, k, n);2（1）计算1+3+5+99+101=#includemain( ) int i,sum=0; for(i=1;i=101;i=i+2) sum=sum+i; printf(sum=%dn,sum); （2）计算1*2*3+3*4*5+.+99*100*101=#includemain( ) long i; long term,sum=0; for(i=1;i=99;i=i+2) term=i*(i+1)*(i+2); sum=sum+term; printf(sum=%ld,sum);（3）计算a+aa+aaa+.+aa.a(n个a)的值#includemain( ) long term=0,sum=0; int a,i,n; printf(input a,n:); scanf(%d,%d,&a,&n); for(i=1;i=n;i=i+) term=term*10+a; sum=sum+term; printf(sum=%ldn,sum);(4 )计算11/2+1/3-.+1/99-1/100+.，直到最后一项的绝对值小于。 #include#includemain( ) int n=1; float term=1.0,sign=1,sum=0; while(fabs(term)=1e-4) term=sign*1.0/n; sum=sum+term; sign=sign*(-1); n+; printf(sum=%fn,sum);(5) #include#includemain( ) int n=1,count=1; float x; double sum,term; printf(input x:); scanf(%f,&x); sum=x; term=x; do term=(-1)*term*x*x/(n+1)*(n+2); sum=sum+term; n=n+2; count+; while(fabs(term)=1e-5); printf(sin(x)=%f,count=%dn,sum,count);3 #include main()int x = 0,find=0; while(!find) /*当没找到时继续执行循环*/ x+; if(x%2=1&x%3=2&x%5=4&x%6=5&x%7=0) printf(x=%dn,x);find=1; 4 #include main()int i,n;long m=1,p=1;printf(input n:);scanf(%d,&n);for(i=1;i=n;i+) m=i*i; p=i*i*i; printf(m=%ld,p=%ldn,m,p); 5. #includemain()float c,f;for(c=-40;c=110;c=c+10)f=9/5*c+32;printf(f=%fn,f); 6. #include#includemain()int n;double c=0.01875,x;dox=x*pow(1+c,12)-1000;n+;while(x0);printf(x=%dn,x); 7. #includemain()int n=0;float x=100.0,a;printf(input a:);scanf(%f,&a);dox=x*(1+a);n+;while(x=200.0);printf(n=%dn,n); 8 . #include#includemain( ) int n=1,count=1; float sum=0,term=1.0,sign=1; do term=sign*1.0/n; sum=sum+term; sign=sign*(-1); n=n+2; count+; while(fabs(term)=1e-4); sum=4*sum; printf(sum=%f,count=%dn,sum,count);9 #include#includemain( ) int n=1,count=1; float sum=1,term=1.0; do term=term/n; sum=sum+term; n=n+1; count+; while(fabs(term)=1e-5); printf(e=%f,count=%dn,sum,count);10. #include#includemain() int m; for(m=100;m=999;m+) if(m=pow(m/100,3)+pow(m/10%10,3)+pow(m%10,3) printf(m=%dn,m); 11. #includemain() int i=0,n; long sum=0,term=1; printf(Inputn:); scanf(%d,&n); do i+; term=term*i; sum=sum+term; while(sumn); printf(%dn,i-1); 12#includemain( ) int i,n,m,sum=0,count=0; printf(input n：); scanf(%d,&n); for(i=1;i0) sum=sum+m; count+; else break; printf(sum=%d,count=%dn,sum,count); printf(program is over!n); 13#includemain( ) int i,n,m,sum=0,count=0; printf(input n：); scanf(%d,&n); for(i=1;i0) sum=sum+m; count+; else if(m0) continue; else break; printf(sum=%d,count=%dn,sum,count); printf(program is over!n); 14. #include main()int x,y,z;for (x=0;x17;x+) for(y=0;y=25;y+) for(z=0;z=30;z+) if(x+y+z=30&3*x+2*y+1*z=50)printf(x=%d,y=%d,z=%dn,x,y,z); 15. #include main()int x,y;for (x=0;x98;x+) for(y=0;y97;y+) if(x+y=98&2*x+4*y=386)printf(x=%d,y=%dn,x,y); 16. #include main()int x,y,z;for (x=0;x=20;x+) for(y=0;y=33;y+) for(z=0;z=100;z+) if(x+y+z=100&5*x+3*y+z/3.0=100)printf(x=%d,y=%d,z=%dn,x,y,z); 17. #include main()int x,y,z;for (x=0;x=10;x+) for(y=0;y=20;y+) for(z=0;z=100;z+) if(x+y+z=50&10*x+5*y+z=100)printf(x=%d,y=%d,z=%dn,x,y,z); 18. #include#includemain() int i,j,k,c=0; for(i=1;i=9;i+) printf(%6d,i); printf(n); for(i=1;i=9;i+) printf( -); printf(n); for(int x=1;x=9;x+) for(int y=1;y=9;y+) printf(%6d,x*y); printf(n); #include#includemain() int i,j,k,c=0; for(i=1;i=9;i+) printf(%6d,i); printf(n); for(i=1;i=9;i+) printf( -); printf(n); for(int x=1;x=9;x+) for(int y=1;y=x;y+) printf(%6d,x*y); printf(n); #include#includemain() int i,j,k,