C Interview Questions, Answers for Freshers and Experienced asked in various Company Job Interviews

C Interview Questions

Questions Answers Views Company eMail

Switch (i) i=1; case 1 i++; case 2 ++i; break; case 3 --i; Output of i after executing the program

Mascot,

5 10408

char S; char S[6]= " HELLO"; printf("%s ",S[6]); output of the above program ? (0, ASCII 0, I,unpredictable)

Mascot,

7 14709

Unsigned char c; for ( c=0;c!=256;c++2) printf("%d",c); No. of times the loop is executed ?

Mascot, TCS,

8 20739

int i; i=2; i++; if(i=4) { printf(i=4); } else { printf(i=3); } output of the program ?

Mascot,

15 21568

write a C code to reverse a string using a recursive function, without swapping or using an extra memory.

Motorola, TCS, Wipro,

9 43493

write a C code To reverse a linked list

Motorola, Wipro,

2 15283

Difference between Class and Struct.

Ericsson, Motorola, Wipro,

13 41369

Tell about strtok & strstr functions

HCL, iFlex, Motorola,

2 19700

two progs are given. one starts counting frm 0 to MAX and the other stars frm MAX to 0. which one executes fast.

Verifone,

5 9341

int a=2,b=3,c=4; printf("a=%d,b=%d\n",a,b,c); what is the o/p?

Verifone,

6 22813

C program code int zap(int n) { if(n<=1)then zap=1; else zap=zap(n-3)+zap(n-1); } then the call zap(6) gives the values of zap [a] 8 [b] 9 [c] 6 [d] 12 [e] 15

TCS, Wipro,

6 24275

n=7623 { temp=n/10; result=temp*10+ result; n=n/10 }

Wipro,

7 13987

int zap(int n) { if(n<=1)then zap=1; else zap=zap(n-3)+zap(n-1); } then the call zap(6) gives the values of zap [a] 8 [b] 9 [c] 6 [d] 12 [e] 15

Wipro,

10 17951

The C language terminator is a.semicolon b.colon c.period d.exclamation mark

TCS,

6 15689

What is false about the following A compound statement is a.A set of simple statments b.Demarcated on either side by curly brackets c.Can be used in place of simple statement d.A C function is not a compound statement.

CCEM, TCS,

5 22207

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Un-Answered Questions { C }

What is the benefit of using #define to declare a constant?

1150

why use functions a) writing functions avoids rewriting the same code over and over b) using functions it becomes easier to write programs and keep track of what they are doing c) a & b d) none of the above

1206

Describe static function with its usage?

1274

Can we declare variables anywhere in c?

1055

Is Exception handling possible in c language?

2100

How do I round numbers?

1054

What is the concatenation operator?

1210

what is diffrence between linear and binary search in array respect to operators?what kind of operator can be used in both seach methods?

1919

How is a macro different from a function?

1246

How can you convert integers to binary or hexadecimal?

1074

What is calloc()?

1133

Is c compiled or interpreted?

1250

Explain the use of bit fieild.

1198

write a c programming using command line argument,demonstrate set operation(eg;union,intersection,difference) example output is c:>setop 12 34 45 1 union 34 42 66 c:>setop 12 34 1 42 66 c:>setop 12 34 diff 12 56 67 78 setop 12 34

2255

How can I do graphics in c?

1072

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