SAP Written Test: Technical Aptitude; Questions and Answers with Explanations PDFs
1. If int is 2 bytes wide.What will be the output of the program? #include void fun(char**); int main() { char *argv[] = {"ab", "cd", "ef", "gh"}; fun(argv); return 0; } void fun(char **p) { char *t; t = (p+= sizeof(int))[-1]; printf("%s\n", t); } A.ab B.cd C.ef D.gh
Answer: B
2. What will be the output of the program if the array begins at 65486 and each integer occupies 2 bytes? int main() { int arr[] = {12, 14, 15, 23, 45}; printf("%u, %u\n", arr+1, &arr+1); return 0; } A.12, 65490 B.14, 65492 C.65488, 65496 D.64490, 65498
Answer: C
Explanation: Here, the base address(also the address of first element) of the array is 65486. => Here, arr is reference to arr has type "pointer to int". Therefore, arr+1 is pointing to second element of the array arr memory location. Hence 65486 + 2 bytes = 65488 => Then, &arr is "pointer to array of 5 ints". Therefore, &arr+1 denotes "5 ints * 2 bytes * 1 = 10 bytes". Hence, begining address 65486 + 10 = 65496. So, &arr+1 = 65496. Hence the output of the program is 65488, 65496.
3. Recursive functions are executed in a A.last in first out order B.first in First out order C.Are maintained in a stack D.none of the above
Answer: A
4. What will be the output of the program? #include int main() { int i=3, j=4, k, l; k = addmult(i, j); l = addmult(i, j); printf("%d %d\n", k, l); return 0; } int addmult(int ii, int jj); { int kk, ll; kk = ii + jj; ll = ii * jj; return (kk, ll); } A.Function addmult()return 7 and 12 B.No output C.Error: Compile error D.None of above
Answer: C
Explanation: There is an error in this statement int addmult(int ii, int jj);. We have to remove the semi-colon, because it was an definition of the function addmult()
5. Point out the error if any in the while loop.<p> </p> main() { int i =0; while() { printf("%d",i++); if(i>10) break; } } A.the condition in the while loop is a must B.the while lop must be replaced by a for loop
Answer: A
6. What will be the output of the program? #include void fun(int); int main() { int a=3; fun(a); return 0; } void fun(int n) { if(n > 0) { fun(--n); printf("%d,", n); fun(--n); } } A.0, 2, 1, 0 B.1, 1, 2, 0 C.0, 1, 0, 2 D.0, 1, 2, 0
Answer: D
7. What will be output of following c program?<p> </p> int main() { for(printf("1");!printf("0");printf("2")) printf("Sachin"); return 0; } A.10sachin2 B.10sachin C.10sachin210sachin2 D.10
Answer: D
8. What will be the output of the program? #include int main() { int fun(); int i; i = fun(); printf("%d\n", i); return 0; } int fun() { _AX = 1990; } A.Garbage value B.0 (Zero) C.1990 D.No output
Answer: C
Explanation: The return value of the function is taken from the Accumulator _AX=1990.
9. What will be output of following c program? void main() { int a[]={5,10,15}; int i=0,num; num=a[++i]+ ++i+(++i); printf("%d",num); } A.6 B.17 C.16 D.12
Answer:A
10. What will be the output of the program? #include int main() { int i = 5; while(i-- >= 0) printf("%d,", i); i = 5; printf("\n"); while(i-- >= 0) printf("%i,", i); while(i-- >= 0) printf("%d,", i); return 0; }
A. 4, 3, 2, 1, 0, -14, 3, 2, 1, 0, -1<p> </p>B. 5, 4, 3, 2, 1, 05, 4, 3, 2, 1, 0<p> </p>C. Error<p> </p>D. 5, 4, 3, 2, 1, 05, 4, 3, 2, 1, 05, 4, 3, 2, 1, 0 A.A B.B C.C D.D
Answer: A
11. Point out the error in the following program. #include int main() { char str[] = "Freshersworld"; printf("%.#s %2s", str, str); return 0; } A.in Array declaration B.printf statement C.unspecified character in printf D.No error
Answer: D
12. Find the output of following snippet? # include void main() { char letter = 'Z'; printf("%c",letter); } A.Z B.90 C.Garbage Value D.error
Answer: A
13. What will be the output of the program? #include #define SQR(x)(x*x) int main() { int a, b=3; a = SQR(b+2); printf("%d\n", a); return 0; } A.25 B.11 C.Error D.Garbage value
Answer: B
Explanation: 11 Answer: 11 Explanation: a = SQR(b+2); becomes, => a = b+2 * b+2; Here SQR(x) is replaced by macro to x*x . => a = 3+2 * 3+2; => a = 3 + 6 + 2; => a = 11;
14. What will be the output of the program if value 25 given to scanf()? #include int main() { int i; printf("%d\n", scanf("%d", &i)); return 0; } A.1 B.2 C.5 D.25
Answer: A
Explanation: The scanf function returns the number of input is given. printf("%d\n", scanf("%d", &i)); The scanf function returns the value 1(one). Therefore, the output of the program is '1'.
15. void main() { char far *farther, *farthest; printf("%d..%d",sizeof(farther),sizeof(farthest)); }<p> </p>What is the ouput of above snippet? A.2.4 B.syntax error C.compiler error D.4.2
Answer: D
16. What will be the content of 'file.c' after executing the following program? #include int main() { FILE *fp1, *fp2; fp1=fopen("file.c", "w"); fp2=fopen("file.c", "w"); fputc('A', fp1); fputc('B', fp2); fclose(fp1); fclose(fp2); return 0; } A.B B.A B C.B B D.Error in opening file 'file1.c'
Answer: A
17. What is the output of following snippet? main() { int c[] = { 2.8,3.4,4,6.7,5}; int j,*p=c,*q=c; for(j=0;j A.syntax error B.compiler error C.2 2 2 2 2 2 3 4 6 5 D.5 6 4 5 2 2 2 2
Answer: C
18. What will be the output of the program ? #include int main() { float arr[] = {12.4, 2.3, 4.5, 6.7}; printf("%d\n", sizeof(arr)/sizeof(arr[0])); return 0; } A.4 B.5 C.6 D.7
Answer: A
Explanation: The variable arr has 4 elements. The size of the float variable is 4 bytes. Hence 4 elements x 4 bytes = 16 bytes sizeof(arr[0]) is 4 bytes Hence 16/4 is 4 bytes Hence the output of the program is '4'.
19. main() { char *p; p ="Hello"; printf ("%c\n"' *&*p); }What is the output of above snippet ? A.H B.syntax error C.compiler error D.E
Answer: A
20. main() { int i; print("%d",scanf("%d",&i)); // value 10 is given to the input here }What is the ouput of above snippet? A.1 B.compiler error C.syntax error D.2
Answer: A
21. What will be output of following c program? void main() { int a,i=4; a=- -i+- -i+- -5; printf("%d %d",a,i); } A.13 4 B.-3 2 C.7 2 D.-13 4
Answer: A
22. Find the output from following program? #include int main() { int a = 10, b; a >=5 ? b=100: b=200; printf("%d\n", b); return 0; } A.100 B.200 C.Error: L value required for b D.Garbage value
Answer: C
Explanation: variable b is not assigned
23. What will be output of following c program? void main() { int z; z=(5,3,2); printf("%d",z); } A.5 B.3 C.2 D.10
Answer: C
24. What will be the output of the program? #include int main() { unsigned int i = 65535; /* Assume 2 byte integer*/ while(i++ != 0) printf("%d",++i); printf("\n"); return 0; } A.Infinite loop B.0 1 2 ... 65535 C.0 1 2 ... 32767 - 32766 -32765 -1 0 D.No output
Answer: A
25. What will be output of following c program? int main() { float **(*ptr)[4]=(float **(*)[4]); ptr+=5; printf("%d %d",ptr,sizeof ptr); return 0; } A.0 2 B.5 2 C.4 2 D.40 2
Answer: D
26. What will be output of following c program? struct myStruct { int a; char b; } *ptr; int main() { struct myStruct ms={400,'A'}; printf("%d %d",ptr->a,ptr->b); return 0; } A.400 A B.400 65 C.400 97 D.0 0
Answer: D
27. What will be the output of the program? #include int main() { int i; i = printf("How r u\n"); i = printf("%d", i); printf("%d", i); return 0; } A.How r u 7 2 B.How r u 8 2 C.How r u 1 1 D.Error: cannot assign printf to variable
Answer: B
28. What will be output of following c program? #include "string.h" typedef struct stu1 { int roll; char *name; double marks; } STU1; typedef struct stu2 { int roll; char *name; double marks; } STU2; void main() { STU1 s1={25,"Rohit",87.43},*p1; STU2 *p2; p1=&s1; memcpy(p2,p1,4); printf("Roll : %d\n",p2->roll); printf("Name : %s\n",p2->name); printf("Marks : %lf",p2->marks); } A.Roll : 25 Name : Rohit Marks : 87.430000 B.Roll : 25 Name : Rohit Marks : 0.000000 C.Roll : 0 Name : Rohit Marks : 87.430000 D.Roll : 0 Name : null Marks : 0.000000
Answer: B
29. Assume integer is 2 bytes wide. How many bytes will be allocated for the following code? #include #include #define MAXROW 3 #define MAXCOL 4 int main() { int (*p)[MAXCOL]; p = (int (*) [MAXCOL])malloc(MAXROW *sizeof(*p)); return 0; } A.56 bytes B.128 bytes C.24 bytes D.12 bytes
Answer: C
30. What will be output when you will execute following c code? void main() { volatile int a=11; printf("%d",a); } A.Garbage B.11 C.2 D.We cannot predict
Answer: D
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