امین ثابت اقدم
401655019
1.
فایل سرآیند به منظور استفاده از دستورات مورد نظر در آن کتابخانه خاص مورد استفاده قرار میگیرد. یک برنامه سی بدون فایل سرآیند به هیچ عنوان قابل نوشتن نیست
2.
سرآیند: سرآیند با دستور include به شکل زیر:
#include <”library”>
وارد میشود.
بدنه: بدنه‌ی یک برنامه‌ی سی اول به صورت:
init X()
در اینجا init به معنی اینتیجر است اینجا برنامه برای کار خود در آخر کار یک عدد باید دریافت کند که در آخر کد مابرای پایان بخشیدن به کد دستور: return 0; را وارد میکنید که عدد ۰ را به init main برگردانده و برنامه را به طور کامل می‌بندد
3. خطا:
3.c:3:1: warning: data definition has no type or storage class
3 | main();
| ^~~~
3.c:3:1: warning: type defaults to ‘int’ in declaration of ‘main’ [-Wimplicit-int]
3.c:4:1: error: expected identifier or ‘(’ before ‘{’ token
4 | {
| ^
شکل درست :
#include <stdio.h>
int main()
{
printf ("keep looking!");
printf ("you\'ll find it");
return 0;
}
4.
#include <stdio.h>
int main()
{
printf("The answer to the question of\nLife, the Universe, and Everything is 42.");
return 0;
}
out:
The answer to the question of
Life, the Universe, and Everything is 42.
5.
#include <stdio.h>
int main()
{
float x,y;
printf("please insert X\n:");
scanf("%f",&x);
y=1/(x*x+x+3);
printf("%f",y);
return 0;
}
out (0.2=x):
please insert X
:0.2
0.308642
6.
#include <stdio.h>
int main()
{
float number;
number = (1/3)*3;
printf("(1/3)*3 is equal to %5.2f",number);
return 0;
}
out:
(1/3)*3 is equal to 0.00⏎
7.
#include <stdio.h>
int main()
{
float kg,g;
printf("please insert the weight in Kilo Grams\n:");
scanf("%f",&kg);
g = kg * 1000;
printf("weight in Grams is:%f",g);
return 0;
}
out (kg=20.59):
please insert the weight in Kilo Grams
:20.59
weight in Grams is:20590.000000⏎
8.
#include <stdio.h>
int main()
{
const int m_m=750000;
int totp_m,totf_m,totp_y,totf_y,m_m2,dif;
printf("750000 for each\n");
totp_m = m_m*2;
printf("totaly %d rial for both in a month\n",totp_m);
totp_y = totp_m*12;
printf("which makes %d rial in year fo company\n",totp_y);
m_m2 = (m_m*13.5/100)+m_m;
printf("13.5%% more than their current salary will be %d rials\n",m_m2);
totf_m=m_m2*2;
printf("totaly %d rial for both in a month after change\n",totf_m);
totf_y=totf_m*12;
printf("which makes %d rial in year fo company afetr change\n",totf_y);
dif = totf_y-totp_y;
printf("\nnow the total cost for this change for the company will be %d rials per year.",dif);
return 0;
}
out:
750000 for each
totaly 1500000 rial for both in a month
which makes 18000000 rial in year fo company
13.5% more than their current salary will be 851250 rials
totaly 1702500 rial for both in a month after change
which makes 20430000 rial in year fo company afetr change
now the total cost for this change for the company will be 2430000 rials per year.⏎
9.
#include <stdio.h>
int main()
{
float a4p,pp,t,tot,a4np,pnp,tf,totf;
printf("please insert A4 price, then pen price, then Inflation\n");
scanf("%f\n%f\n%f",&a4p,&pp,&t);
tot=a4p*50+pp*150;
printf("total cost for A4 papers and pens in this company for this year is %f\n",tot);
printf("total");
tf=t/100;
a4np=a4p+(a4p*tf);
pnp=pp+(pp*tf);
totf=pnp*150+a4np*50;
printf("\n and total cost for A4 papers and pens for the next year is %f",totf);
return 0;
}
out (a4p=20 pp=15 t=6.3):
please insert A4 price, then pen price, then Inflation
20
15
6.3
total cost for A4 papers and pens in this company for this year is 3250.000000
total
and total cost for A4 papers and pens for the next year is 3454.750000⏎
10.
#include <stdio.h>
int main()
{
const float div=0.5;
float x,y,s;
printf("please insert the base, then height\n");
scanf("%f\n%f",&x,&y);
s = x*y*div;
printf("the area of the triangel is equel to:%f",s);
return 0;
}
out (x=20,y=15):
please insert the base, then height
20
15
the area of the triangel is equel to:150.000000⏎
11.
#include <stdio.h>
int main()
{
float e,s;
printf("please insert the water as L\n:");
scanf("%f",&e);
s=e*950/3;
printf("there are %f * 10^23 molcoles in this amount of water",s);
return 0;
}
out (e=20):
please insert the water as L
:20
there are 6333.333496 * 10^23 molcoles in this amount of water⏎
12.
#include <stdio.h>
int main()
{
const float sa=3.156;
int a;
float f;
printf("please insert your age (only in years)\n:");
scanf("%d",&a);
f=a*sa;
printf("your age in seconds is equel to:%f * 10^7",f);
return 0;
}
out (a=18):
please insert your age (only in years)
:18
your age in seconds is equel to:56.807999 * 10^7⏎