Explore topic-wise MCQs in C Programming.

This section includes 65 Mcqs, each offering curated multiple-choice questions to sharpen your C Programming knowledge and support exam preparation. Choose a topic below to get started.

Explore topic-wise MCQs in C Programming.

Macro calls and function calls work exactly similarly.

Will the following program print the message infinite number of times? #include #define INFINITELOOP while(1) int main() { INFINITELOOP printf("IndiaBIX"); return 0; }

Preprocessor directive #undef can be used only on a macro that has been #define earlier

A preprocessor directive is a message from programmer to the preprocessor.

Point out the error in the program #include int main() { int i; #if A printf("Enter any number:"); scanf("%d", &i); #elif B printf("The number is odd"); return 0; }

There exists a way to prevent the same file from getting #included twice in the same program.

In a macro call the control is passed to the macro.

What will be the output of the program? #include #define SQUARE(x) x*x int main() { float s=10, u=30, t=2, a; a = 2*(s-u*t)/SQUARE(t); printf("Result = %f", a); return 0; }

In which stage the following code #include gets replaced by the contents of the file stdio.h

Point out the error in the program #include #define SI(p, n, r) float si; si=p*n*r/100; int main() { float p=2500, r=3.5; int n=3; SI(p, n, r); SI(1500, 2, 2.5); return 0; }

If the file to be included doesn't exist, the preprocessor flashes an error message.

What will be the output of the program? #include #define MAN(x, y) ((x)>(y)) ? (x):(y); int main() { int i=10, j=5, k=0; k = MAN(++i, j++); printf("%d, %d, %d\n", i, j, k); return 0; }

Which of the following are correct preprocessor directives in C? 1: #ifdef 2: #if 3: #elif 4: #undef

Will the program compile successfully? #include #define X (4+Y) #define Y (X+3) int main() { printf("%d\n", 4*X+2); return 0; }

What will the SWAP macro in the following program be expanded to on preprocessing? will the code compile? #include #define SWAP(a, b, c)(c t; t=a, a=b, b=t) int main() { int x=10, y=20; SWAP(x, y, int); printf("%d %d\n", x, y); return 0; }

What will be the output of the program? #include #define SQUARE(x) xx int main() { float s=10, u=30, t=2, a; a = 2(s-u*t)/SQUARE(t); printf("Result = %f", a); return 0; }

Point out the error in the program #include #define SI(p, n, r) float si; si=pnr/100; int main() { float p=2500, r=3.5; int n=3; SI(p, n, r); SI(1500, 2, 2.5); return 0; }