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

C Interview Questions

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FILE *fp1,*fp2; fp1=fopen("one","w") fp2=fopen("one","w") fputc('A',fp1) fputc('B',fp2) fclose(fp1) fclose(fp2)} a.error b. c. d.

Wilco,

1751

What are the output(s) for the following ? #include char *f() {char *s=malloc(8); strcpy(s,"goodbye")} main() { char *f(); printf("%c",*f()='A'); }

Wilco,

1187

What does. int *x[](); means ?

Wilco,

1070

a=10;b= 5;c=3;d=3; if(a printf(%d %d %d %d a,b,c,d) else printf("%d %d %d %d a,b,c,d);

Wilco,

1143

main() { int i = 10; printf(" %d %d %d ", ++i, i++, ++i); }

Wilco,

1158

main() { inta=10,b=20; a>=5?b=100:b=200; printf("%d ",b); }

Wilco,

1558

main() { printf("hello"); fork(); }

Wilco,

1202

main() { struct s1 { char *str; struct s1 *ptr; }; static struct s1 arr[] = { {"Hyderabad",arr+1}, {"Bangalore",arr+2}, {"Delhi",arr} }; struct s1 *p[3]; int i; < BR> for(i=0;i<=2;i++) p[i] = arr[i].ptr; printf("%s ",(*p)->str); printf("%s ",(++*p)->str); printf("%s ",((*p)++)->str); }

Wilco,

1439

typedef struct{ char *; nodeptr next; } * nodeptr ; What does nodeptr stand for?

Wilco,

1637

Differentiate between null and void pointers.

TCS,

1169

Explain the difference between null pointer and void pointer.

TCS,

1092

Explain the Difference between the New and Malloc keyword.

InterGraph,

1141

The statement, int(*x[]) () what does in indicate?

1149

find the sum of two matrices and WAP for it.

Huawei,

1140

Write a program with dynamically allocation of variable.

Atos Origin,

1135

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Un-Answered Questions { C }

What are the 3 types of structures?

1034

How do we make a global variable accessible across files? Explain the extern keyword?

1884

What does == mean in texting?

1308

What are the features of the c language?

1088

Explain output of printf("Hello World"-'A'+'B'); ?

1500

How to write a code for reverse of string without using string functions?

2147

What does 3 periods mean in texting?

1066

What is the size of a union variable?

1054

explain how do you use macro?

1160

a) Identify the following declarations. Ex. int i (integer variable) float a[l0](array of 10 real nos) int (*f())() void *f int (*f()) [] void *f int f[] [] [] char *(*f) () int (*f[]) [] float(*f) [] [] float **f int ******f

2157

Place the #include statement must be written in the program?

1041

Hai sir, I had planned to write the NIC scientific engineer exam , plz post the sample question......

2189

formula to convert 2500mmh2o into m3/hr

1000

Using functions, write a program that multiplies two arrays. Use the following functions: - Function ReadArray - Function MultiplyArrays - Function DisplayArrays

2358

What is volatile variable in c?

1095

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