C_67 C Program to concatenate two strings | with strcat() and without strcat()

In this lecture we will discuss a C program to concatenate two strings with strcat() and without strcat()

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#coding #strings #jennyslectures #cprogramming #clanguage

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Very helpful. Way of teaching is awesome thank you soo much mam because of you only I am very much interested to learn c programming.

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[bipuldas]

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[jayaprakashs]

The strlen() function find only the number of characters in the given string. This one counts the characters only but not null(\0) character.

[manukumar-lqyy]

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[bipashadutta]

10:29
The correct code of concatenate two strings using loop.
Strlen function doesn't include null Terminator so that's why used this addition line **s1[len1 + len2] = '\0';** to make the s1 a valid string.


#include <stdio.h>
#include <string.h>

int main() {
char s1[30] = "Bipasha";
char s2[5] = "Dutta";
int len1, len2, i;

len1 = strlen(s1);
len2 = strlen(s2);

for (i = 0; i < len2; i++) {
s1[len1 + i] = s2[i];
}

s1[len1 + len2] = '\0'; // Adding null terminator to the combined string

printf("%s", s1);

return 0;
}

Hope it helpsss!!

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[naolyag]

Even if the size of destination string is less, with that for loop, it will still concatenate all source chars to it by overflowing the buffer allowed for destination.

I do think both strcat(d, s) and for loop will lead to the problem of buffer overflow.

So the best solution is, omitting size of destination to be determined by concatenation result.

Overall I liked your ways of teaching mom Jenny.👏

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thanks mam.
I am watching this before my exam

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