What is the difference between char a[] = “string”; and char *p = “string”;?

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In the first case 6 bytes are allocated to the variable a which is fixed, where as in the second case if *p is assigned to some other value the allocate memory can change.

2012-03-07, 2763👍, 0💬

How do you decide which integer type to use?
How do you decide which integer type to use? It depends on our requirement. When we are required an integer to be stored in 1 byte (means less than or equal to 255) we use short int, for 2 bytes we use int, for 8 bytes we use long int. A char is for 1-byte integers, a short is for 2-byte integers, a... 2012-03-05, 3000👍, 0💬

What is the difference between char a[] = “string”; and char *p = “string”; ?
What is the difference between char a[] = “string”; and char *p = “string”; ? Answer1 a[] = “string”; char *p = “string”; The difference is this: p is pointing to a constant string, you can never safely say p[3]=’x'; however you can always say a[3]=’x'; char a[]=”string”; - character array init... 2012-03-08, 2983👍, 0💬

What can I safely assume about the initial values of variables which are not explicitly initialized?
What can I safely assume about the initial values of variables which are not explicitly initialized? It depends on complier which may assign any garbage value to a variable if it is not initialized. 2012-03-07, 2978👍, 0💬

How do I declare an array of N pointers to functions returning pointers to functions returning pointers to characters?
How do I declare an array of N pointers to functions returning pointers to functions returning pointers to characters? Answer1 If you want the code to be even slightly readable, you will use typedefs. typedef char* (*functiontype_one)(void); typedef functiontype_one (*functiontype_two)(void); functi... 2012-03-09, 2886👍, 0💬

What does extern mean in a function declaration?
What does extern mean in a function declaration? Using extern in a function declaration we can make a function such that it can used outside the file in which it is defined. An extern variable, function definition, or declaration also makes the described variable or function usable by the succeeding... 2012-03-06, 2854👍, 0💬

What is the difference between char a[] = “string”; and char *p = “string”;?
What is the difference between char a[] = “string”; and char *p = “string”;? In the first case 6 bytes are allocated to the variable a which is fixed, where as in the second case if *p is assigned to some other value the allocate memory can change. 2012-03-07, 2764👍, 0💬

How do I initialize a pointer to a function?
How do I initialize a pointer to a function? This is the way to initialize a pointer to a function void fun(int a) { } void main() { void (*fp)(int); fp=fun; fp(1); } 2012-03-12, 2728👍, 0💬

What does extern mean in a function declaration?
What does extern mean in a function declaration? It tells the compiler that a variable or a function exists, even if the compiler hasn’t yet seen it in the file currently being compiled. This variable or function may be defined in another file or further down in the current file. 2012-03-09, 2671👍, 0💬

What’s the best way to declare and define global variables?
What’s the best way to declare and define global variables? The best way to declare global variables is to declare them after including all the files so that it can be used in all the functions. 2012-03-06, 2664👍, 0💬

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