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C Interview Questions & Answers

Below we have listed all the C Interview Questions and answers. Feel free to comment on any C Interview Questions or answer by the comment feature available on the page.

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C Interview Questions & Answers

C is a high-level and general purpose programming language that is ideal for developing firmware or portable applications. Originally intended for writing system software, C was developed at Bell Labs by Dennis Ritchie for the Unix Operating System (OS) in the early 1970s. With the increasing popularity of object-oriented programming, C is being rapidly replaced as "the" programming language by C++, a superset of the C language that uses an entirely different set of programming concepts, and by Java, a language similar to but simpler than C++, that was designed for use in distributed networks.


Subcategories for C Interview Questions & Answers :-

Following are sub categories for which Interview Questions & Answers are available under C Interview Questions & Answers. Please select the appropriate sub-category:-

Arrays in C Interview Questions & Answers (18)

Branches & Loops in C Interview Questions & Answers (22)

C Basics Interview Questions & Answers (92)

Dynamic Memory Allocation in C Interview Questions & Answers (21)

File Operations in C Interview Questions & Answers (16)

Functions in C Interview Questions & Answers (59)

Operators in C Interview Questions & Answers (22)

Pointers in C Interview Questions & Answers (43)

Strings in C Interview Questions & Answers (32)

Structures in C Interview Questions & Answers (39)

Variables in C Interview Questions & Answers (38)

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Question
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main() { int i, j; scanf("%d %d"+scanf("%d %d", &i, &j)); printf("%d %d", i, j); }
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main() { char *p = "hello world"; p[0] = 'H'; printf("%s", p); }
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main() { char * strA; char * strB = I am OK; memcpy( strA, strB, 6); }
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const int perplexed = 2; #define perplexed 3 main() { #ifdef perplexed #undef perplexed #define perplexed 4 #endif printf("%d",perplexed); }
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struct Foo { char *pName; char *pAddress; }; main() { struct Foo *obj = malloc(sizeof(struct Foo)); clrscr(); obj->pName = malloc(100); obj->pAddress = malloc(100); strcpy(obj->pName,"Your Name"); strcpy(obj->pAddress, "Your Address"); free(obj); printf("%s", obj->pName); printf("%s", obj->pAddress); }
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main() { char *a = "Hello "; char *b = "World"; clrscr(); printf("%s", strcat(a,b)); }
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main() { char *a = "Hello "; char *b = "World"; clrscr(); printf("%s", strcpy(a,b)); }
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void func1(int (*a)[10]) { printf("Ok it works"); } void func2(int a[][10]) { printf("Will this work?"); } main() { int a[10][10]; func1(a); func2(a); }
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main() { printf("%d, %d", sizeof('c'), sizeof(100)); }
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main() { int i = 100; clrscr(); printf("%d", sizeof(sizeof(i))); }
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main() { int c = 5; printf("%d", main||c); }
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main() { char c; int i = 456; clrscr(); c = i; printf("%d", c); }
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void main () { int x = 10; printf ("x = %d, y = %d", x,--x++); }
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main() { int i =10, j = 20; clrscr(); printf("%d, %d, ", j-- , --i); printf("%d, %d ", j++ , ++i); }
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main() { int x=5; clrscr(); for(;x==0;x--) { printf("x=%dn?", x--); } }
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main() { int x=5; for(;x!=0;x--) { printf("x=%dn", x--); } }
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main() { int x=5; clrscr(); for(;x<= 0;x--) { printf("x=%d ", x--); } }
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main() { { unsigned int bit=256; printf("%d", bit); } { unsigned int bit=512; printf("%d", bit); } }
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main() { int i; clrscr(); for(i=0;i<5;i++) { printf("%dn", 1L << i); } }
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main() { signed int bit=512, i=5; for(;i;i--) { printf("%dn", bit = (bit >> (i - (i -1)))); } }
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