. 1- , . , . - . 2- , , . . Fortran, IBM. Fortran (1957 ) Algol, . Fortran - . Basic, GWBasic, Qbasic, Visual Basic. 1971 Pascal. , UNIX. , , , , , . ++, . ++ - - .
4. . - ++.
- , , . . 1:
include<iostream.h>
include<math.h>
main(){
int S,a,;
cin>>a>> ;
S=a* ;
cout<<S<<\n;
return 0;
}
- , - .
2:
include<iostream.h>
include<math.h>
main(){
int S,a,b;
cin>>a>> b;
if(a>b)
S=a- b;
else
S=b-a;
cout<<S<<\n;
return 0;}
5. . - ++.
, . . . . , . , .
|
|
:
include<iostream.h>
include<math.h>
main(){
int x,x0,xm,h,a,b,y;
cin>>a>> b>> x0>>xm>>h;
x= x0;
while(x< =x0)
{ y=tan(x*x+a*b);
cout<<y<<\n;
x+=h;
}
return 0;
}
:
include<iostream.h>
include<math.h>
main(){
int n,i;
int S=0;
cin>>n;
for(i=1;i<=n;i++)
{ S+=i*i;
cout<<S<<\n;
}
return 0;
}
6.- - . ++.
() , . , , .. - .
- . , - .
-: ([ - .]).- . - . - - , - . -, - -, .
, , , , 14 20.
include<iostream.h>
include<math.h>
float fact(int n)
{ float P=1;
int=i;
for(i=1;i<=n;i++)
P*=i;
return P;
}
main(){
cout<<14!=<< fact (14)<<\n;
cout<<20!=<< fact (20)<<\n;
return 0;
}
7. . . ++.
. : >> cin (cin>>). :<< cout (cout<<). . 2 : 1) cin>>x>>a; 2) cin>>x; cin>>a; -, , . : 1)cout<<y; (15.2); 2)cout<<y=<<y; (y=15.2); 3)cout<<y=<<sqrt(a+b);