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Questions - c-strings

How to print a specific character from a string in C

I'm recently practicing looping. I learned how to print: for example home to h ho hom home. by using #include <stdio.h> #include <string.h> int main (){ char s[100]; printf(&...
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atuy

c

loops

for-loop

nested-loops

c-strings

Votes: 0

Answers: 3

Latest Answer

It is easy to do. For example for ( size_t i = strlen( s ); i != 0; i-- ) { for ( size_t j = 0; j < i; j++ ) { putchar( s[j] ); } putchar( '\n' ); } Another way is the fol...
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Vlad from Moscow

strcpy() corrupts both strings if first argument is a char pointer

Define the following variables: char *name1 = "Allan"; char name2[] = "Marco"; printf("%s %s\n", name1, name2); // Allan Marco Then the following code works fine: strcpy...
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Ivan

c

undefined-behavior

c-strings

string-literals

strcpy

Votes: 0

Answers: 2

Latest Answer

In this call strcpy(name1, name2); you are trying to change the string literal pointed to by the pointer name1. char *name1 = "Allan"; Any attempt to change a string literal results in und...
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Vlad from Moscow

Getting no output why is that?

I', learning C and I'm getting no output for some reason, probably I don't return as I should but how I should? (described the problem in the comments below :D) Any help is appreciated! #include <...
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Patton13

c

scope

c-strings

function-definition

toupper

Votes: 0

Answers: 2

Latest Answer

You declared within the function a local variable length array that will not be alive after exiting the function char str_out[strlen(string) + 1]; So your program has undefined behavior. If the funct...
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Vlad from Moscow

ANSI C - Why malloc and free dont work for char pointers?

When I try to run this code: char *s; s = (char *) malloc (15); s = "hello world"; free(s); using gcc ts.c -ansi -Wall the result is: free(): invalid pointer Aborted (core dumped) and the ...
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alon ohana

c

pointers

dynamic-memory-allocation

free

c-strings

Votes: 0

Answers: 1

Latest Answer

This code snippet char *s; s = (char *) malloc (15); s = "hello world"; produces a memory leak. At first a memory was dynamically allocated and its address was assigned to the pointer s s =...
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Vlad from Moscow

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