Tài liệu Bài Tập – Đọc Chương Trình C pptx

GV.TVN Bài Tập – Đọc Chương Trình C P.1
Đọc các chương trình được thiết kế như dưới đây, ghi lại kết quả đọc được và so sánh với kết
quả khi chạy chương trình để kiểm tra kỹ năng vận dụng cấu trúc điều kiển chương trình.
//*****De 1
#include <iostream.h>
void main()
{
cout<<"de 1: \n";
int i=1, n=5, sum=0;
while(i<=n)
{
sum+=i*i;
i++;
}
cout<<"i = "<<i<<" ; sum = "<<sum;
}//end main1
KQ: i = 6 , sum = 55
//*****De 2
#include <iostream.h>
void main()
{
cout<<endl<<"de 2: \n";
int f=1, n=5;
do {
f*=n;
n--;
}while(n>1);
cout<<"n = "<<n<<" ; f = "<<f;
}//end main2
KQ: n = 1 , f = 120
//*****De 3

#include <iostream.h>
void main()
{
cout<<endl<<"de 3: \n";
int i=0, n=5;
while(i<n)
{
if(i<3) { i+=2; n+=i; }
else i+=3;
}
cout<<"i = "<<i<<" ; n = "<<n;
}//end main3
KQ: i = 13 , n = 11
//*****De 4
#include <iostream.h>
void main()
{
cout<<endl<<"de 4: \n";
int a=1, b=3, c;
while(a>0&&(b>0||c>0))
{
a+=1;
b-=2;
c=a+b;
}
cout<<"a = "<<a<<" ; b = "<<b<<" ; c = "<<c;
}//end main4
KQ: a = 5 , b = -5 , c = 0
//*****De 5
#include <iostream.h>

void main()
{
cout<<endl<<"de 5: \n";
int i, a, b, c ;
for(i=0; i<=5; i++)
{
if(i%2==0) a=i;
else if(i%3==0) b=i;
else c=a+b;
}
cout<<"a = "<<a<<" ; b = "<<b<<" ; c = "<<c;
}//end main5
KQ: a = 4 , b = 3 , c = 7
//*****De 6
#include <iostream.h>
void main()
{
cout<<endl<<"de 6: \n";
int a=b=c=7;
do {
a++;
b--;
c=2*b-a;
}while(c>=0);
cout<<"a = "<<a<<" ; b = "<<b<<" ; c = "<<c;
}//end main6
KQ: a = 10 , b = 4 , c = -2
GV.TVN Bài Tập – Đọc Chương Trình C P.2
//*****De 7
#include <iostream.h>

void main()
{
cout<<endl<<"de 7: \n";
int i, a=b=c=1;
for(i=8; i>b; i--)
{
a=i;
b=c+1;
if(b%2==0) c=2*b+1;
}
cout<<"a = "<<a<<" ; b = "<<b<<" ; c = "<<c;
}//end main7
KQ: a = 7 , b = 6 , c = 13
//*****De 8
#include <iostream.h>
void main()
{
cout<<endl<<"de 8: \n";
int a=10; b=a+3;
for(i=5; i<b; i++)
if(a<b) i=(++a)/2;
else i=b--;
cout<<"i = "<<i<<" ; a = "<<a<<" ; b = "<<b;
}//end main8
KQ: i = 14 , a = 13 ,b = 12
//*****De 9
#include <iostream.h>
void main()
{
cout<<endl<<"de 9: \n";

int a=10; b=a*3; i=3;
do {
if(a<b) a=a+i;
else b=a-b;
i*=2;
}while(2*i<a);
cout<<"i = "<<i<<" ; a = "<<a<<" ; b = "<<b;
}//end main9
KQ: i = 8 , a = 10 , b = 30
//*****De 10
#include <iostream.h>
void main()
{
cout<<endl<<"de 10: \n";
int a=10; b=a*2, c;
while(b-a>0)
{
if(b<23) c=b*2+1;
else b=c-a-2;
a=c-(++b);
}
cout<<"a = "<<a<<" ; b = "<<b<<" ; c = "<<c;
}//end main10
KQ: a = 23 , b = 22 , c = 45
//*****De 11
#include <iostream.h>
void x11(int m, int &n);
void main()
{
cout<<endl<<"de 11: \n";

int a=10; b=a*3;
do {
if(b<a*3) a=b*2;
else b=b-a;
}while(a<b);
cout<<"1. a = "<<a<<" ; b = "<<b;
x11(a,b);
cout<<endl<<"2. a = "<<a<<" ; b = "<<b;
}//end main11
void x11(int m, int &n)
{
if(m%3==0&&n%3==0) m=n*2;
else n=m*2;
}//end x11
KQ: 1. a = 40 , b = 20
2. a = 40 , b = 80
//*****De 12
#include <iostream.h>
void y12(int m, int &n)
void main()
{
cout<<endl<<"de 12: \n";
int a=10; b=a%4;
do {
if(b*4<a) b=a*2;
else a=b+2;
}while(a<b);
cout<<"1. a = "<<a<<" ; b = "<<b;
y12(a,b);
cout<<endl<<"2. a = "<<a<<" ; b = "<<b;

}//end main12
void y12(int m, int &n)
{
if(m==20||n==20) n=m/2;
else m=n*2;
}//end y12
KQ: 1. a = 22 , b = 20
2. a = 22 , b = 11
GV.TVN Bài Tập – Đọc Chương Trình C P.3
//*****De 13
#include <iostream.h>
void z13(int &m, int n);
void main()
{
cout<<endl<<"de 13: \n";
int i, a=10; b=2*(a++);
for(i=0; i<a; i+=3) a-=i;
cout<<"1. a = "<<a<<" ; b = "<<b;
z13(b,a);
cout<<endl<<"2. a = "<<a<<" ; b = "<<b;
}//end main13
void z13(int &m, int n)
{
if(m%2!=0&&n%2!=0) n=m*2;
else m=n*2;
}//end z13
KQ: 1. a = 2 , b = 20
2. a = 2 , b = 4
//*****De 14
#include <iostream.h>

void f14(int m, int &n);
void main()
{
cout<<endl<<"de 14: \n";
int i, a=10; b=a/3;
for(i=13; i>a; i--)
if(b<a) b=i*2;
else a=b-i;
cout<<"1. a = "<<a<<" ; b = "<<b;
f14(a,b);
cout<<endl<<"2. a = "<<a<<" ; b = "<<b;
}//end mai14
void f14(int m, int &n)
{
if(m*n<100) m=n*3; n=m+40;
}//end f14
KQ: 1. a = 14 , b = 26
2. a = 14 , b = 54
//*****De 15
#include <iostream.h>
void t15(int &m, int n);
void main()
{
cout<<endl<<"de 15: \n";
int i, a=10; b=a*2;
for(i=5; a<b; i++) a+=i;
cout<<"1. a = "<<a<<" ; b = "<<b;
t15(b,a);
cout<<endl<<"2. a = "<<a<<" ; b = "<<b;
}//end main15

void t15(int &m, int n)
{
if(m*n>400) m=n*2;
n=m+60;
}//end t15
KQ: 1. a = 21 , b = 20
2. a = 21 , b = 42
//*****De 16
#include <iostream.h>
void z16(int &m, int n);
void main()
{
cout<<endl<<"de 16: \n";
int a=10; b=a/4;
if(b+5>a) a=b*2;
else b=b+a;
cout<<"1. a = "<<a<<" ; b = "<<b;
z16(a,b);
cout<<endl<<"3. a = "<<a<<" ; b = "<<b;
}//end main16
void z16(int &m, int n)
{
while(2*n-m>0) n-=5; m=n+m;
cout<<endl<<"2. m = "<<m<<" ; n = "<<n;
}//end z16
KQ: 1. a = 10 , b = 12
2. m = 12 , n = 2
2. a = 12 , b = 12
//*****De 17
#include <iostream.h>

void t17(int m, int &n);
void main()
{
cout<<endl<<"de 17: \n";
int a=10; b=a*3;
do {
if(b<3*a) a=b*2;
else b=b-a;
}while(a<b);
cout<<"1. a = "<<a<<" ; b = "<<b;
t17(a,b);
cout<<endl<<"3. a = "<<a<<" ; b = "<<b;
}ens main17
void t17(int m, int &n)
{
if(m%3==0&&n%3==0) m=n*2;
else n=m*2;
cout<<endl<<"2. m = "<<m<<" ; n = "<<n;
}//end t17
KQ: 1. a = 40 , b = 20
2. m = 40 , n = 80
2. a = 40 , b = 80
GV.TVN Bài Tập – Đọc Chương Trình C P.4
//*****De 18
#include <iostream.h>
int x18(int , int &);
void main()
{
cout<<endl<<"de 18: \n";
int i, a=10; b=a/2, c=a+b;

for(i=10; a<b+16; i--) a+=i;
cout<<"1. a = "<<a<<" ; c = "<<c;
c=x18(b,a);
cout<<endl<<"3. a = "<<a<<" ; c = "<<c;
}//end main 18
int x18(int m, int &n)
{
if((m+n)%3==0) m=n+2;
else n=m+2;
cout<<endl<<"2. m = "<<m<<" ; n = "<<n;
return m+n;
}//end x18
KQ: 1. a = 29 , c = 15
2. m = 5 , n = 7
2. a = 7 , c = 12
//***** De 19
#include <iostream.h>
int y19(int&, int);
void main()
{
cout<<endl<<"de 19: \n";
int i, a=10; b=a*2, c=a+b;
for(i=5; a<b; i++) a+=i;
cout<<"1. a = "<<a<<" ; c = "<<c;
c=y19(a,b);
cout<<endl<<"3. a = "<<a<<" ; c = "<<c;
}//end main19
int y19(int &m, int n)
{
if(m*n<=420) m=n*2;

else n=m+60;
cout<<endl<<"2. m = "<<m<<" ; n = "<<n;
return m+n;
}//end y19
KQ: 1. a = 21 , c = 30
2. m = 40 , n = 20
2. a = 40 , c = 60
//*****De 20
#include <iostream.h>
int z20(int&, int&);
void main()
{
cout<<endl<<"de 20: \n";
int a; b, c;
for(a=5, b=10; a+b<20; a++, b++) c=a+b;
cout<<"1. a = "<<a<<" ; c = "<<c;
c=z20(a,b);
cout<<endl<<"3. a = "<<a<<" ; c = "<<c;
}//end main20
int z20(int &m, int &n)
{
if(m%2==0) n=n*m;
if(n%2==0) m=n+m;
cout<<endl<<"2. m = "<<m<<" ; n = "<<n;
return m+n;
}//end z20
KQ: 1. a = 8 , c = 19
2. m = 112 , n = 104
2. a = 112 , c = 216