EEM-119 Algoritma ve Programlama I Dersi

Format belirleyicileri

#include <stdio.h>

int main(int argc, char *argv[]) {
  int i, j;
  float x, y;
  i=10;
  j=20;
  x=23.45;
  y=7442;
  printf("i:%d, j:%d, x:%f, y:%f",i,j,x,y);
  return 0;
}

i:10, j:20, x:23.450001, y:7442.000000

#include <stdio.h>

int main(int argc, char *argv[]) {
  int i, j;
  i=10;
  j=20;

  printf("i:%5d\n",i);
  printf("i:%5d\n",123);
  printf("i:%5d\n",1230);
  printf("i:%5d\n",1230123);
  
  printf("j:%-5d, i:%d\n",j,i);
  printf("j:%-5d, i:%d",1230123,i);
  return 0;
}

i:   10
i:  123
i: 1230
i:1230123
j:20   , i:10
j:1230123, i:10

#include <stdio.h>

int main(int argc, char *argv[]) {
  int i;
  i=10;
  printf("i:%7.5d\n",i);
  
  return 0;
}

i:  00010

#include <stdio.h>

int main(int argc, char *argv[]) {
  float x,y;
  x=23.45;
  y=7442;
  
  printf("x:%.5f, y:%.2f\n",x,y);
  
  return 0;
}

x:23.45000, y:7442.00

#include <stdio.h>

int main(int argc, char *argv[]) {
  float x,y;
  x=23.45;
  y=7442;
  
  printf("x:%10.5f, y:%14.2f\n",x,y);
  
  return 0;
}

x:  23.45000, y:     7442.00

#include <stdio.h>

int main(int argc, char *argv[]) {
  printf("basit\thizalama\ticin\n");
  printf("\\t\tkullanilabilir.");
  
  return 0;
}

basit	hizalama	icin
\t	kullanilabilir.

scanf fonksiyonu

#include <stdio.h>

int main(int argc, char *argv[]) {
  int a,b,c;
  printf("birinci sayiyi giriniz: ");
  scanf("%d",&a);
  printf("ikinci sayiyi giriniz: ");
  scanf("%d",&b);
  c=a+b;
  printf("%d+%d=%d",a,b,c);
  
  return 0;
}

birinci sayiyi giriniz: 

  12


ikinci sayiyi giriniz: 

  25


12+25=37

#include <stdio.h>

int main(int argc, char *argv[]) {
  float pi=3.14, r;
  float alan;
  printf("alani bulmak icin yaricapi giriniz: ");
  scanf("%f",&r);
  alan=pi*r*r;
  printf("yaricapi %.2f olan dairenin alani: %.2f", r, alan);
  
  return 0;
}

alani bulmak icin yaricapi giriniz: 

  5


yaricapi 5.00 olan dairenin alani: 78.50

#include <stdio.h>
#define PI 3.14
int main(int argc, char *argv[]) {
  float r;
  float alan;
  printf("alani bulmak icin yaricapi giriniz: ");
  scanf("%f",&r);
  alan=PI*r*r;
  printf("yaricapi %.2f olan dairenin alani: %.2f", r, alan);
  
  return 0;
}

alani bulmak icin yaricapi giriniz: 

  5


yaricapi 5.00 olan dairenin alani: 78.50

#include <stdio.h>
int main(int argc, char *argv[]) {
  int x,y;
  printf("iki sayi giriniz: ");
  scanf("%d",&x);
  scanf("%d",&y);
  printf("%d / %d = %d",x,y,x/y);
  
  return 0;
}

iki sayi giriniz: 

  20
  5


20 / 5 = 4

#include <stdio.h>
int main(int argc, char *argv[]) {
  float x,y;
  printf("iki sayi giriniz: ");
  scanf("%f",&x);
  scanf("%f",&y);
  printf("%.2f / %.2f = %.2f",x,y,x/y);
  
  return 0;
}

iki sayi giriniz: 

  22
  5


22.00 / 5.00 = 4.40

#include <stdio.h>
int main(int argc, char *argv[]) {
  float x,y;
  printf("iki sayi giriniz: ");
  scanf("%f%f",&x,&y);
  printf("%.2f / %.2f = %.2f",x,y,x/y);
  
  return 0;
}

iki sayi giriniz: 

  17 4


17.00 / 4.00 = 4.25

-İşlem önceliği

#include <stdio.h>
int main(int argc, char *argv[]) {
  int a=10,b=20,c=30;
  printf("%5d\n",a+b*c);
  printf("%5d\n",a+-b*c);
  printf("%5d\n",-a+-b);
  
  return 0;
}

  610
  -590
  -30

#include <stdio.h>
int main(int argc, char *argv[]) {
  int i;
  i=72.9999;
  printf("%d",i);
  
  return 0;
}

#include <stdio.h>
int main(int argc, char *argv[]) {
  int i,j,k;
  i=j=k=20;
  printf("%d %d %d",i,j,k);
  
  return 0;
}

20 20 20

#include <stdio.h>
int main(int argc, char *argv[]) {
  int i;
  float f;
  f=i=20.78;
  printf("%d %f",i,f);
  
  return 0;
}

20 20.000000

#include <stdio.h>
int main(int argc, char *argv[]) {
  int i;
  float f;
  i=f=20.78;
  printf("%d %f",i,f);
  
  return 0;
}

20 20.780001

#include <stdio.h>
int main(int argc, char *argv[]) {
  int i,j,k;
  k=5+(i=j=10);
  printf("%d %d %d",i,j,k);
  
  return 0;
}

10 10 15

yanlış degisken tanimlama sekilleri

int degisken 1
int 1.degisken
int 1degisken
int degisken.1
int değişken
int DEĞİŞKEN

dogru degisken tanimalamali

int degisken1
int degisken_1
int birinci_degisken
int _degisken
int bu_degisken
int Bu_1inci_degisken
int BUDEGISKEN
int BU_DEGISKEN
int degisken_

yanlis atamalar

1=a; // a=1 olmali
1+a=b; // b=a+1 olmali
-i=j; // i=-j olmali

Bileşke Operatörler

#include <stdio.h>
int main(int argc, char *argv[]) {
  int i=100,j=20,k=30;
  i += j; // i = i+j
  printf("%d\n",i);
  i += 5;
  printf("%d\n",i);
  j -= k;
  printf("%d\n",j);
  i*=j+5;
  printf("%d",i);
  
  
  return 0;
}

#include <stdio.h>
int main(int argc, char *argv[]) {
  int i=100,j=20,k=30;
  i /= k;
  printf("%d\n",i);
  
  j %= i;
  printf("%d\n",j);
  
  return 0;
}

3
2

Arttirma ve azaltma operatörleri

#include <stdio.h>
int main(int argc, char *argv[]) {
  int a=10;
  a++;
  ++a;
  printf("%d\n",a);
  printf("%d\n",a++);
  printf("%d\n",++a);
  
  return 0;
}

12
12
14

#include <stdio.h>
int main(int argc, char *argv[]) {
  int a=10, b=20;
  a += b++;
  printf("%d\n",a++);
  a += ++b;
  printf("%d\n",++a);
  
  return 0;
}

30
54

#include <stdio.h>
int main(int argc, char *argv[]) {
  int a=10, b=20, c=30;
  c += a++ + ++b;
  printf("%d %d %d",a,b,c);
  
  return 0;
}

11 21 61

-Örnekler

#include <stdio.h>
int main(int argc, char *argv[]) {
  int x,y,z;
  printf("uc sayi giriniz: ");
  scanf("%d%d%d",&x,&y,&z);
  printf("sayilarin toplami: %d\n",x+y+z);
  printf("sayilarin ortalamasi: %d",(x+y+z)/3);
  
  return 0;
}

uc sayi giriniz: 
  2 3 5

sayilarin toplami: 10
sayilarin ortalamasi: 3

#include <stdio.h>
int main(int argc, char *argv[]) {
  int x,y,z;
  printf("uc sayi giriniz: ");
  scanf("%d%d%d",&x,&y,&z);
  printf("sayilarin toplami: %d\n",x+y+z);
  printf("sayilarin ortalamasi: %f",(x+y+z)/3.0);
  
  return 0;
}

uc sayi giriniz: 
  2 3 5

sayilarin toplami: 10
sayilarin ortalamasi: 3.333333

#include <stdio.h>
int main(int argc, char *argv[]) {
  float kenar1, kenar2, alan;
  printf("dikdortgenin alanini bulan program:\n");
  printf("birinci kenari giriniz: ");
  scanf("%f",&kenar1);
  printf("ikinci kenari giriniz: ");
  scanf("%f",&kenar2);
  alan=kenar1*kenar2;
  printf("kenarlari %.2f ve %.2f olan dikdortgenin alani:%.2f",
      kenar1, kenar2, alan);
  
  return 0;
}

dikdortgenin alanini bulan program:
birinci kenari giriniz: 
  3

ikinci kenari giriniz: 
  11.7

kenarlari 3.00 ve 11.70 olan dikdortgenin alani:35.10

#include <stdio.h>
#define PI 3.14
int main(int argc, char *argv[]) {
  //kurenin hacmini bulan program
  double yaricap, hacim;
  printf("yaricapi giriniz: ");
  scanf("%lf",&yaricap);
  hacim = (4./3) * PI * yaricap * yaricap * yaricap;
  printf("yaricapi %.2lf olan kurenin hacmi:\n", yaricap);
  printf("%.2lf", hacim);

  return 0;
}

yaricapi giriniz: 
10

yaricapi 10.00 olan kurenin hacmi:
4186.67

#include <stdio.h>
#define PI (22.0/7)
int main(int argc, char *argv[]) {
  //kurenin hacmini bulan program
  double yaricap, hacim;
  printf("yaricapi giriniz: ");
  scanf("%lf",&yaricap);
  hacim = (4./3) * PI * yaricap * yaricap * yaricap;
  printf("yaricapi %.2lf olan kurenin hacmi:\n", yaricap);
  printf("%.2lf", hacim);

  return 0;
}

yaricapi giriniz: 
10

yaricapi 10.00 olan kurenin hacmi:
4190.48