My C code doesn't work?
Hi, I'm currently following a C tutorial and I'm stuck. I can't get past this point/error. The program is supposed to output four phone numbers, but it's not finished yet.
#include <stdio.h>
int main() {
char phoneNumbers[4] [256] = {
"+49265367000",
"+49347318001",
"+49134812002",
"+49127414003",
};
if (showMenu() == 0) {
showPhoneNumbers(phoneNumbers);
} else {
addPhoneNumber();
}
return 0;
}
void showPhoneNumbers(char myPhoneNumbers[4][256]) {
printf("Phone numbers: \n");
for(int i = 0; i < 4; i++) { //this line is always red
printf("(%d) %s \n", i, &myPhoneNumbers[i]);
}
}
void addPhoneNumber(){
printf("Add new number");
}
int showMenu() {
int selection;
printf("###### Welcome ######\n");
printf("(0) Display phone numbers\n");
printf("(1) Add new number\n");
scanf(" %d", &selection);
printf("\n\n");
if (selection == 0 || selection == 1) {
return selection;
} else {
printf("Input invalid\n");
return showMenu();
}
}
(1 votes)
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In C, data and functions must be declared before the first use.
Either you push main() down or set
at the beginning of the file. The definition of the functions can thus also remain below.
This is because C times was designed for single-pass compilers. That is, it was not possible to skip around in the source text in order to dissolve something like that.