C Programming - MCQ Practice Questions

What is the primary difference between while and do-while loops?

In a switch statement, if a case label is missing the break statement, what occurs?

Which control flow statement allows jumping to a labeled location in C?

Consider the code: int x = 5; if(x > 3) if(x > 10) printf("A"); else printf("B"); Which statement best describes the output?

What does the following code segment accomplish? int i = 0; while(i < 5) { if(i == 2) { i++; continue; } printf("%d ", i); i++; }

In the ternary operator expression (condition ? expr1 : expr2), if condition is true, which expression evaluates?

Which of the following is a valid use of the switch statement in C?

Analyze: What is printed by this code? for(int i = 1; i <= 3; i++) { for(int j = 1; j <= i; j++) { printf("%d", i); } printf(" "); }

What happens when you use break in a nested loop structure?

Which statement is true about the goto statement in modern C programming?

Consider the code: int x = 0; while(1) { if(++x > 3) break; printf("%d ", x); } What is the output?

What is the key distinction between if-else and switch statements in terms of evaluation?

What does the following code segment do? int i = 0; do { printf("%d ", i); } while(++i < 3);

In a for loop for(int i = 0; i < 5; i++), at what point does the increment happen?

What is the output of: for(int i = 0; i < 2; i++) for(int j = 0; j < 2; j++) if(i == j) continue; printf("Done");

Consider: switch(x) { case 1: case 2: case 3: printf("A"); break; default: printf("B"); } What advantage does stacking cases provide?

What will this code do? int i = 0; while(i < 5) { printf("%d ", i++); if(i == 3) break; }

Which statement best describes the 'dangling else' problem in C?

What does continue do in a for loop with multiple statements in body?

In a nested loop structure, which statement is used to skip the current iteration of the innermost loop only?