[Solved] garbage value in C array

[ad_1] In the function argument: char arr[9][5] In the loop: for (i = 0; i<5; i++) { for (j = 0; j<9;j++) { if (arr[i][j] == 1) You flipped the position of i and j. i should go from 0 to 9, j from 0 to 5. 0 [ad_2] solved garbage value in C array

[Solved] Confusing and unexpected behaviour of “if” statement in C [closed]

[ad_1] You didn’t copy the program correctly. This is the real program that reproduces the bug: #include <stdio.h> #define TRUE 1 #define FALSE 0 int function_returning_false() {return FALSE;} int main() { if (function_returning_false) { // note, no () printf(“function returned true\n”); } } So, it’s not calling the function – it is passing the function … Read more

[Solved] some arm inline assembly [closed]

[ad_1] As mentioned by the commenters LDR r3,#0xaabbccdd is not a valid instruction. Immediates in ARM opcodes are on the form ZeroExtend(imm8) ROR (imm4*2), which would allow you to represent e.g. 0xaa000000, 0x00bb0000 and even 0xd000000d – but not e.g. 0xaabb0000 or 0xaabbccdd. Assemblers typically provide a pseudo-instruction for loading 32-bit immediates, e.g. in GAS … Read more

[Solved] Unclear about return value of a void function in C [closed]

[ad_1] The result in this situation is based on whats on top of the stack when test() is returned. The behaviour is undefined. You should compile your code with warnings enabled: gcc main.c -Wall Also, altering your argv pointer is a bit dirty. De-referencing argv directly communicates your intentions in a clear way: printf(“\n%d\n”, test(atoi(*++argv), … Read more

[Solved] Making a new function by fixing one of the input parameters [closed]

[ad_1] You probably want lambda or std::function, or std::bind auto l_add_100 = [](double x) { return add_two_numbers(x, 100); }; std::function<double(double)> f_add_100 = [](double x) { return add_two_numbers(x, 100); } auto b_add_100 = std::bind(add_two_numbers, std::place_holder::_1, 100); or with non hard coded number double y = //… auto l_add_y = [y](double x) { return add_two_numbers(x, y); } … Read more

[Solved] How does GCC store member functions in memory?

[ad_1] For the purpose of in-memory data representation, a C++ class can have either plain or static member functions, or virtual member functions (including some virtualdestructor, if any). Plain or static member functions do not take any space in data memory, but of course their compiled code take some resource, e.g. as binary code in … Read more