C Programming - MCQ Practice Questions

What is the size of 'long long' data type in C99 standard?

What will be printed: float f = $\frac{5}{2}$; printf("%f", f);

What happens when you declare a variable without initializing it in C?

Which storage class specifier limits a variable's scope to the current file?

What will be the output: const int x = 10; x = 20; printf("%d", x);

Which of these correctly represents a floating-point literal with exponent notation?

What is the range of values for a signed short int?

Which of the following is a valid declaration of a constant array?

In C, what is the difference between 'int' and 'unsigned int' in terms of range on a 32-bit system?

Which storage class has both 'static' and 'auto' properties in certain contexts?

What is the output of: int arr[3] = {1, 2, 3}; int *p = arr; printf("%d %d", *p, *(p+2));

Consider a scenario where you need to store a variable that can hold values up to 10 billion. Which data type is most suitable?

What will be printed? int x = 0; if (x = 5) printf("True"); else printf("False");

What is the output? for (int i = 1; i <= 5; i++) { if (i == 3) break; printf("%d ", i); }

What does the following nested if-else produce? int a = 10, b = 20; if (a > b) if (b > 0) printf("X"); else printf("Y");

What is the output of this switch statement? int x = 2; switch(x) { case 1: printf("One"); break; case 2: printf("Two"); case 3: printf("Three"); break; default: printf("Other"); }

How many times will this loop execute? for (int i = 0; i < 5; ++i) { if (i == 2) continue; if (i == 4) break; }

What is printed by this code? int x = 5; while (x-- > 0) printf("%d ", x);

What is the output? int n = 1; do { printf("%d ", n); n++; } while (n > 5);

Determine the output: int i = 0; while (i < 3) { printf("%d ", i++); }