[Solved] No More Confusing Pointers

Point 1: Nested functions are not standard C. They are supported as GCC extension.. Point 2: printf(“&b is:%s\n”,&b); is wrong and invokes UB, because of improper format specifier. You need to change that to printf(“&b is:%p\n”,(void *)&b); Point 3: &(&a) is wrong. the operand for & needs to be an lvalue, not another address, which … Read more

[Solved] I want to print a name inputted by the user and some stars(inputted too) EXACTLY before and after the name [closed]

You Could Well Do This First Make a char array , Containing Number Of Maximum Stars that will be asked to print. char stars[] = “***************************************”; Then Ask User Input for number of stars they want to print. int a; printf(“Enter Number of Stars You Want To Print : “); scanf(“%d” , &a); Then You … Read more

[Solved] No output after using strcmp()

I recommend using a C-Style string containing the vowels, then using strchr to search it: const char vowels[] = “aeiou”; const size_t length = strlen(cString); unsigned int vowel_count = 0; for (unsigned int i = 0; i < length; ++i) { if (strchr(vowels, cString[i]) != NULL) { ++vowel_count; } } There are other methods, such … Read more

[Solved] Replacing a character in a c string

This code compiles cleanly using GCC 4.8.2 on Mac OS X 10.9.1 Mavericks with the command line: gcc -O3 -g -std=c11 -Wall -Wextra -Wmissing-prototypes -Wstrict-prototypes \ -Wold-style-definition -Werror bits.c -o bits Source: #include <math.h> #include <stdio.h> #include <string.h> extern int twosComplement(int number); int twosComplement(int number) { printf(“searching for twos complement of %d\n”, number); int temp … Read more

[Solved] why does the following code produce segmentation fault [duplicate]

WHere does your string point to? Nowhere! That’s why you have segmentation fault. You have to either allocate variable on stack as array or define it as pointer and later allocate memory using malloc. When using malloc, don’t forget to include “stdlib.h” Either do this: char str[6]; strcpy(str,”C-DAC”); or char *str=malloc(sizeof(*str) * 6); strcpy(str,”C-DAC”); solved … Read more

[Solved] Exception thrown at 0x0F640E09 (ucrtbased.dll) in ConsoleApplication5.exe: 0xC0000005: Access violation writing location 0x014C3000?

Exception thrown at 0x0F640E09 (ucrtbased.dll) in ConsoleApplication5.exe: 0xC0000005: Access violation writing location 0x014C3000? solved Exception thrown at 0x0F640E09 (ucrtbased.dll) in ConsoleApplication5.exe: 0xC0000005: Access violation writing location 0x014C3000?

[Solved] Null terminated C character arrays

First, “sample” is called a string literal. It declares a const char array terminated with a null character. Let us go on: char arr[]=”sample”; The right hand part in a const char array of size 7 (6 characters and a ‘\0’. The dimension of arr is deduced from its initialization and is also 7. The … Read more

[Solved] C Check duplicate string entries

#include <stdio.h> #include <string.h> int main(void){ char str[]= “/proc/proc hello/foo 4000”; char path[256]; char pid[10]; char *p; p=strrchr(str, ‘ ‘); strcpy(pid, p+1); *p=’\0’; strcpy(path, str); printf(“%s\n”, path);// /proc/proc hello/foo printf(“%s\n”, pid);// 4000 return 0; } 2 solved C Check duplicate string entries