Inserting char string into another char string
c
Solution
char * strA = "Blahblahblah", * strB = "123", strC[50];
int x = 4;
strncpy(strC, strA, x);
strC[x] = '\0';
strcat(strC, strB);
strcat(strC, strA + x);
printf("%s\n", strC);
Explanation:
- You declare the two strings you will be joining, plus a third string into which you will put them.
- You declare an integer to tell the program after how many characters you wish to insert the second string into the first.
- The strncpy function copies the first x characters into strC. You have to add the null ('\0') character at the end, otherwise you'll probably get rubbish.
- Strcat to copy the second string.
- Another strcat to copy the remaining part of the first string (strA + x).
Hope that helps.
Remark: remember to make strC long enough to contain both strA and strC, otherwise you'll produce a segmentation fault. You may do this by declaring the string as an array, like in my example.
Problem
Ok, so I have a char stringA and char stringB, and I want to be able to insert stringB into stringA at point x. ``` char *stringA = "abcdef"; char *stringB = "123"; ``` with a product of `"ab123cdef"` does anyone know how to do this? Thanks in advance