Updated: April 19, 2023 |
Concatenate two strings
#include <string.h> char* strcat( char* dst, const char* src );
libc
Use the -l c option to qcc to link against this library. This library is usually included automatically.
The strcat() function appends a copy of the string pointed to by src (including the terminating NUL character) to the end of the string pointed to by dst. The first character of src overwrites the NUL character at the end of dst.
The same pointer as dst.
#include <stdio.h> #include <string.h> #include <stdlib.h> int main( void ) { char buffer[80]; strcpy( buffer, "Hello " ); strcat( buffer, "world" ); printf( "%s\n", buffer ); return EXIT_SUCCESS; }
produces the output:
Hello world
Processes that register ISRs shouldn't use the NEON versions.
Safety: | |
---|---|
Cancellation point | No |
Interrupt handler | Read the Caveats |
Signal handler | Yes |
Thread | Yes |
Implementations of strcat() that are optimized using SIMD instructions aren't safe to use in an interrupt handler. These include the NEON implementations on ARMv7 and AArch64.