Every line of this c program please explain. Thank you Source Code: // include necessary header files # include # include # include int main(){ // Use current time as seed
Every line of this c program please explain. Thank you
Source Code:
// include necessary header files
# include<stdio.h>
# include<time.h>
# include<stdlib.h>
int main(){
// Use current time as seed
srand(time(0));
// declare variables
int arr[5][5] = {0}, user_num[5] = {0}, k = 1, i, j;
int num[75] = {0}, n, flag, count, winner = 0;
// initialize num array
for(i = 0; i < 75; i++)
num[i] = k++;
// initialize the array cell with random numbers
for(i = 0; i < 5; i++){
for(j = 0; j < 5; j++){
while(1){
// generate random numbers
n = rand() % 75;
if(num[n] != 0){
arr[i][j] = n + 1;
num[n] = 0;
break;
}
}
}
}
// display board
printf(" B I N G O\n");
printf("--------------------------\n");
for(i = 0; i < 5; i++){
for(j = 0; j < 5; j++){
printf("%3d |",arr[i][j]);
}
printf("\n--------------------------\n");
printf("\n");
}
// take input of five numbers
printf("Input 5 number combination: ");
for(i = 0; i < 5; i++)
scanf("%d",&user_num[i]);
// make the position 0 for all aviable number
// if not found then not a winner
for(i = 0; i < 5; i++){
flag = 0;
n = user_num[i];
for(j = 0; j < 5; j++){
for(k = 0; k < 5; k++){
if(arr[j][k] == n){
user_num[i] = 0;
arr[j][k] = 0;
flag = 1;
break;
}
}
if(flag == 1)
break;
}
if(flag == 0)
break;
}
if(flag == 0)
printf("Not a winner!");
else{
// check horizontal
for(j = 0; j < 5; j++){
count = 0;
for(k = 0; k < 5; k++){
if(arr[j][k] == 0)
count++;
else
break;
}
if(count == 5){
printf("BINGO winner!");
winner = 1;
break;
}
}
if(winner == 0){
// check vertical
for(j = 0; j < 5; j++){
count = 0;
for(k = 0; k < 5; k++){
if(arr[k][j] == 0)
count++;
else
break;
}
if(count == 5){
printf("BINGO winner!");
winner = 1;
break;
}
}
}
if(winner == 0){
// check principal diagonal
count = 0;
for(j = 0; j < 5; j++){
if(arr[j][j] == 0)
count++;
}
if(count == 5){
printf("BINGO winner!");
winner = 1;
}
}
if(winner == 0){
// check secondary diagonal
count = 0;
if(arr[0][4] + arr[1][3] + + arr[2][2] + + arr[3][1] + + arr[4][0] == 0){
printf("BINGO winner!");
winner = 1;
}
}
if(winner == 0)
printf("No winner!");
}
}
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