O'zgaruvchilar va ma'lumot turlari

int yosh;              /* e'lon qilish */
yosh = 25;             /* qiymat berish */

int talaba_soni = 30;  /* ikkalasi birga */

int a = 1, b = 2, c = 3;   /* bir qatorda bir nechtasi */

#include <stdio.h>

int main(void) {
    char harf = 'A';
    int yosh = 25;
    long long aholi = 37000000LL;
    float ortacha = 4.6f;
    double aniq_qiymat = 3.14159265358979;

    printf("char      : %c\n", harf);
    printf("int       : %d\n", yosh);
    printf("long long : %lld\n", aholi);
    printf("float     : %.2f\n", ortacha);
    printf("double    : %.10f\n", aniq_qiymat);

    return 0;
}

#include <stdio.h>

int main(void) {
    printf("char      : %zu bayt\n", sizeof(char));
    printf("short     : %zu bayt\n", sizeof(short));
    printf("int       : %zu bayt\n", sizeof(int));
    printf("long      : %zu bayt\n", sizeof(long));
    printf("long long : %zu bayt\n", sizeof(long long));
    printf("float     : %zu bayt\n", sizeof(float));
    printf("double    : %zu bayt\n", sizeof(double));

    return 0;
}

#include <stdio.h>
#include <limits.h>

int main(void) {
    printf("int          : %d ... %d\n", INT_MIN, INT_MAX);
    printf("unsigned int : 0 ... %u\n", UINT_MAX);
    printf("char         : %d ... %d\n", CHAR_MIN, CHAR_MAX);

    return 0;
}

#include <stdio.h>
#include <limits.h>

int main(void) {
    int katta = INT_MAX;

    printf("Eng katta int : %d\n", katta);
    printf("Unga 1 qo'shsak: %d\n", katta + 1);

    return 0;
}

#include <stdio.h>

int main(void) {
    float f = 0.1f;
    double d = 0.1;

    printf("float  0.1 = %.20f\n", f);
    printf("double 0.1 = %.20f\n", d);

    printf("0.1 + 0.2 == 0.3 ? %s\n", (0.1 + 0.2 == 0.3) ? "ha" : "yo'q");

    return 0;
}

#include <stdio.h>

int main(void) {
    char harf = 'A';

    printf("Belgi sifatida : %c\n", harf);
    printf("Son sifatida   : %d\n", harf);
    printf("Keyingi harf   : %c\n", harf + 1);

    return 0;
}

#define PI 3.14159            /* preprotsessor - turi yo'q */

const double TEZLIK = 299792458.0;   /* haqiqiy o'zgarmas o'zgaruvchi */

enum { MAKS_TALABA = 50 };    /* butun sonli doimiy */

#include <stdio.h>

#define PI 3.14159

int main(void) {
    const double AYLANMA_TEZLIK = 1.5;
    double radius = 3.0;

    printf("Aylana yuzasi: %.4f\n", PI * radius * radius);
    printf("Tezlik: %.1f\n", AYLANMA_TEZLIK);

    /* AYLANMA_TEZLIK = 2.0;   XATO: const o'zgartirib bo'lmaydi */

    return 0;
}

#include <stdio.h>

int main(void) {
    int jami_ball = 7;
    int talaba_soni = 2;

    printf("Butun bo'lish  : %d\n", jami_ball / talaba_soni);
    printf("To'g'ri o'rtacha: %.2f\n", (double) jami_ball / talaba_soni);

    double narx = 99.87;
    printf("int ga aylantirish: %d\n", (int) narx);

    return 0;
}