Question

How can I copy strings in C so that do not overlap the old values? I’d used strcpy() but it clean dest to set values of src.

char* foo =  "  This    is my     string    \0";
char* new = malloc(strlen(str) + 1);
char* token;
int size = 0;

token = strtok(foo, " \t");
while( NULL != token ) 
{   
    int i; 
    for(i = 0; token[i] != '\0'; i++)  
    {
        new[size++] = token[i];
    }

    new[size++] = ' ';
    token = strtok(NULL, " \t");
}
new[size] = '\0';

I want an alternative for this block of code:

int i; 
for(i = 0; token[i] != '\0'; i++)  
{
    new[size++] = token[i];
}

new[size++] = ' ';

There is an native method in C for do this? I not found any function in string.h. Thanks in advance.

Answer 1

How about strdup? It even allocates the target buffer for you.