Tất cả câu hỏi

#include <stdio.h>
void main()
{
    int total=0;
    for(int s=1; s<15; s++)
        total=total+s;
    printf("%d",total);
}

int 2_var = 15;
printf("%d", 2_var);

#include <stdio.h>

int main()
{
    int x = 5, y = 3, z = 1;
    x = x % 3 + z++;
    z = x * y--;
    printf("%d %d %d", x, y, z);

    return 0;
}

char s[] = "AbCd";
printf("%d;%d;%d;%d", s[1],  s[2],  s[3],  s[4]);

#include <stdio.h>
int main() {
    int arr[] = {5, 10, 15};
    for (int i = 0; i < 3; i++)
        printf("%d ", arr[i]);
    return 0;
}

#include <stdio.h>
int main() {
    int quantity;
        double cost;
        printf("Enter the number of apples desired: ");
        scanf("%d", &quantity);
        printf("Now enter the cost of one apple (in $): ");
        scanf("%lf", &cost);
        printf("That will cost $%.2lf\n", quantity * cost);
    return 0;
}

char str1[] = "Hello";
char str2[10];
strcpy(str2, str1);

void main()
{
        int const *p = 5;
        printf("%d", ++(*p));
        getchar();
}

int a[5] = {1, 2, 3};
printf("%d", a[4]);

int a[MAX_SIZE];
int s = 0;
for (int i = 0; i < n; i++)
    s = s +  a[i] * a[i];

#include <stdio.h>

double average(int a, int b, int c) {
    double result;
    result = (a+b+c)/3.0;
    return result;
}

int main() {
    printf("%.6f", average(5, 8, 7));
    return 0;
}