WB JECA MCA C Programming Language Previous Year Questions (PYQs) – Page 1 of 4
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Showing 39 questions
What will be output of the following code snippet? { float x = 5; if(x > 10) printf("Greater"); else if(x = 10) printf("Equal"); else printf("Smaller"); return 0; }
#include
int main()
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Solution
Assignment x=10 makes condition true → prints "Equal".
What will be output of the following code snippet? { int i; for (i=1;i<=5;i++) { if(i == i) continue; printf("%d ", i); } return 0; }
#include
int main()
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Solution
Condition i==i always true → continue always → nothing printed.
Which of the following statements about arrays in C is correct?
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Solution
Array name gives base address; indexing starts from 0.
Read the following statements about functions in C and choose the correct option:
(i) A function in C can return only one value directly.
(ii) Function names can be the same as variable names in the same scope.
(iii) A function must always take at least one argument.
(iv) Recursion is allowed in C functions.
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Solution
(i) true, (ii) false, (iii) false, (iv) true.
What happens when a recursive function in C lacks a proper base condition?
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Solution
No base condition → infinite recursion → stack overflow.
What will be the output of the following C code? { int a = 10; int *p = &a; printf("%d
", *p); return 0; }
#include
int main()
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Solution
*p gives value stored at address of a → 10.
Which of the following statements about structures and unions in C is true?
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Solution
Union size = size of largest member; structure uses separate memory with padding.
What will be the output of the following program? #include
int main() { char str1[20] = "Hello "; char str2[20] = "Hello"; strcpy(str2, str1); if (strcmp(str1, str2) == 0) printf("Equal
"); else printf("Not Equal
"); return 0; }
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Solution
After strcpy, both strings are same → strcmp returns 0 → Equal.
What is the range of unsigned int in C?
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Solution
Unsigned int (16-bit) ranges from 0 to 2^16 - 1 = 65535.
What will be the output of the following C program? { if(n == 0) return 0; else return n + recur(n - 1);
} int main() { int result = recur(4); printf("%d
", result); return 0; }
#include
int recur(int n)
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Solution
recur(4)=4+3+2+1=10.
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