error: ISO C forbids nested functions – What’s wrong?

You missed a closing braces for for loop in the function arraycpy So, the next braces is being taken as the braces for the for loop, and thus when you define the next function, it is being defined inside the next function arraycpy

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Realloc Invalid Pointer in C

you said ‘I copy the pointer to this array into another variable’. The problem is as soon as you do a realloc, the original pointer is no longer valid. I dont see the reason to copy the pointer to a variable?

Two decimal places using printf( )

What you want is %.2f, not 2%f. Also, you might want to replace your %d with a %f ðŸ˜‰ This will output: When this number: 94.945600 is assigned to 2 dp, it will be: 94.95 What you want is %.2f, not 2%f.Also, you might want to replace your %d with a %f 😉#include <cstdio> int main() { printf(“When this number: %f is assigned to 2 dp, it … Read more

What are “prototypes” in a C program?

The book’s I’m using to learn C explains something called “prototypes” which I couldn’t understand properly. In the book, the following sample code explains these “prototypes”. What does this mean here? What are the “prototypes”? Please explain in simple terms.

cc1.exe System Error – libwinpthread-1.dll missing – But it isn’t

I recently downloaded MinGW-w64 from Sourceforge onto my external hard drive, where all the files reside in: E:\mingw-w64\x86_64-4.9.2-posix-seh-rt_v3-rev1\mingw64\bin When I try compiling my first “Hello World” program using gcc on Windows 8.1, I get a cc1.exe System Error, that tells me The program can’t start because libwinpthread-1.dll is missing. Try reinstalling the program to fix … Read more

Dynamic vs static array in c

There are several flavors of arrays, depending on how and where they are declared. Fixed-length Arrays Fixed-length arrays must have their size determined at compile time. You cannot change the size of a fixed-length array after it has been defined. Fixed-length arrays are declared in one of the following ways: In the first three cases, … Read more

Difference between char* and char** (in C)

char* is a pointer to char, char ** is a pointer to a pointer to char. char *ptr; does NOT allocate memory for characters, it allocates memory for a pointer to char. char arr[10]; allocates 10 characters and arr holds the address of the first character. (though arr is NOT a pointer (not char *) … Read more

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