why strncpy with for loop array pointer keep running forever

Vote count: 0

I have variable as

char buff[10] = "000000000";
char data01[4] = "abc"; char data02[4] = "def";

and I want to using strncpy to have buff[10] = abc00def0

so I try

    int i = 0;
//abc00def0
for(; i < 3 ; i++){
    strncpy(&(buff[i]), &(data01[i]),i);
 //   printf("test %d\n",&(data01[i]));

}
i = 5;
for( ; i < 8 ; i++ ){
      strncpy(&(buff[i]), &(data02[(i-5)]),i);
}

 printArray(buff,sizeof(buff));

but when I try to run the code is running forever. Thank you very much

asked 20 secs ago

Shirokuma1205

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why strncpy with for loop array pointer keep running forever