All Questions
14 questions
0
votes
4
answers
217
views
How to write a function in c that counts words
I had an exam yesterday in which one of the questions was about counting words in a given string.
The definition of word would be a portion of a string that is divided by spaces and/or the beginning/...
0
votes
2
answers
75
views
Why does this char* comparison function return -1 when the two input strings are the same? Language: C
I made a function that is supposed to help me order strings in alphabetical order: it should return -1 if the first string comes before the second one, 0 if they are the same string and 1 if the first ...
0
votes
1
answer
440
views
Swapping and copying two strings into one another without using strcpy() in C
this program is meant to take two strings and call a function that copies string 1 into string2, and vice versa, while fulfilling the following criteria:
Uses pointers
Uses only while loops
does not ...
- 81
-1
votes
2
answers
116
views
While(*x) without another condition
I'm learning about the "strcmp" function , It was concerning to me when looking in the syntax of the function prototype I noticed this "while(*x)" loop can someone please explain ...
1
vote
2
answers
6k
views
heap-buffer-overflow for Leetcode strStr problem
The problem is for LeetCode's Implement strStr. I have a working solution when I compile and execute in my computer, it works fine, but when I try to run it with LeetCode it gives me some weird error. ...
- 174
1
vote
1
answer
749
views
Reading elements from a string in C
I am trying to print the first letter of a word at the position entered by the user. If there is a whitespace, then it will just stop searching. There is a warming message concerning funtion gets(). I ...
- 125
-1
votes
2
answers
61
views
What is this line of code achieving? What does the incrementation mean? [duplicate]
I understand that s and t are both pointers and they are being copied to one another but the incrementing part is confusing to me.
void funct(char *s, char *t){
while( *s++ = *t++ );
}
0
votes
2
answers
86
views
Concat two strings through pointers not working
I made a function that concat string t to the end of string s, for my exercise I have to use pointers for this, so I did this way but its not working:
#include <stdio.h>
void strcat(char *s, ...
2
votes
4
answers
998
views
My strstr function works, but a program designed to test it says it doesn't
for school, I have to recreate the strstr function. I did, and I tested it as much as I could, and everything seems to work perfectly.
I am still looking into it but after several hours of ...
- 23
0
votes
2
answers
88
views
Concatenating two strings but getting null. please pont me error in this
I am trying to copy two strings to a new pointer. this is to concatenate string pointer with sub pointer. Trying to make the output in new pointer str .what is wrong in this?
void addsubstring( char* ...
user16199289
0
votes
5
answers
2k
views
Can you explain what while(*++str1) and return (str1 - str2) does?
In this context, does the while loop work like a for loop? Also, what does the str1-str2 string subtraction result in?
#include <stdio.h>
int fun(char *str1) {
char *str2 = str1;
...
- 27
1
vote
3
answers
473
views
When does a while loop stop when it reads a string in C?
I'm trying to implement the strcpy function by myself. The original strcpy is part of the the string.h library.
char *strcpy(char *dest, const char *src)
{
assert(dest != NULL && src != ...
- 615
1
vote
5
answers
257
views
Why won't this C function return strings?
I've been messing with this really simple C function to return the contents of a text file as a string for quite a while now, but no matter what I do, it doesn't work.
#include<stdio.h>
char* ...
0
votes
2
answers
100
views
Can you help me find a problem with this basic C code
I'm solving some problems from a C programming book to brush up on Strings. I can't figure out why my solution is not working.
Question asks to write a function named censor that modifies a string by ...
- 15