How do i put a word into an array - arrays

Question

so this is part of a kind of menu, the only problemis that the word is not getting into the array "frase" i have already tried with frase [ ] = "the word" but idk why it wont work
if(lvl==1)
{
printf("lvl 1\n");
if (opc==1)
{
printf("Animales\n");
a = rand() %3 + 1;
printf("%d", a);
if (a=1)
frase <= "pato";
if (a=2)
frase <="ganso";
if (a=3)
frase <= "avispa";
}
if (opc==2)
{
printf("comida\n");
a = rand() %3 + 1;
if (a=1)
frase <="pasta";
if (a=2)
frase <="pizza";
if (a=3)
frase <="pastel";
}
if (opc==3)
{
printf("paises\n");
a = rand() %3 + 1;
if (a=1)
frase <="peru";
if (a=2)
frase <="brasil";
if (a=3)
frase <="egipto";
}
}
`

Answer 1

I suggest you solve this by modeling your data. In this case with a array of structs. Then you index into to obtain the relevant data:
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <time.h>
int main() {
struct {
const char *opc;
const char **frase;
} data[] = {
{"Animales", (const char *[]) { "pato", "ganso", "avispa" }},
{"comida", (const char *[]) { "pasta", "pizza", "pastel" }},
{"paises", (const char *[]) { "peru", "brasil", "egipto" }}
};
srand(time(0));
int opc = rand() % 3;
printf("lvl 1 %s %s\n", data[opc].opc, data[opc].frase[rand() % 3]);
return 0;
}
If you have a lot of data put the data in a file and write a function to build the struct at start-up. A special case of this approach is to store the data in a lightweight database like SQLite, then you can query for the relevant data at run-time or load it all it upon start-up.
You many no longer need to copy the frase, but if you want to use a strcpy:
char frase[100];
strcpy(frase, data[opc].frase[rand() % 3]);

Answer 2

Multiple things to be improved in the code. The if(a=1) should be changed to ==. Not sure what you mean by frase<="pato", strcpy or strncpy should be used. Please refer the following sample code.
void copytoarray(char *array, char *word, unsigned int len)
{
if(array == NULL || word == NULL)
{
return;
}
strncpy(array, word, len);
}
int main(void) {
char frase[15] = {'\0'};
int a, lvl =1;
int opc =1;
if(lvl==1)
{
printf("lvl 1\n");
if (opc==1)
{
printf("Animales\n");
a = rand() %3 + 1;
printf("%d\n", a);
if (a==1)
copytoarray(frase, "pato", strlen("pato"));
if (a==2)
copytoarray(frase, "ganso", strlen("ganso"));
if (a==3)
copytoarray(frase, "avispa", strlen("avispa"));
}
}
printf("Word: %s\n ",frase);
}