conditional logic(1)

1:
 #include <stdio.h>
  ///*** positive or negative or zero:
 int main()
 {
     int num;
     printf("Enter a number:");
     scanf("%d",&num);
     if(num > 0) {
         printf("The number is positive\n");
     }
      if(num == 0) {
         printf("The number is zero\n");
     }
     if(num<0) {
         printf("The number is negative\n");
     }
     return 0;
 }





output: depend on your value

2:
 #include <stdio.h>
 ///*** prove even odd
 int main()
 {
     int number,sum;
     printf("Enter a number:");
     scanf("%d",&number);
     sum=number%2;
     if(sum==0) {
         printf("The number is even\n");
     }
     else {
         printf("The number is odd\n");
     }
     return 0;
 }
 
output: depend on your value

3: 
 #include <stdio.h>
 ///*** prove vowel consonant
 int main()
 {
char alphabet;
printf("Enter a alphabet:");
scanf("%c",&alphabet);
if(alphabet=='a'){
    printf("It is vowel");
}
if(alphabet=='e'){
    printf("It is vowel");
}
if(alphabet=='i'){
    printf("It is vowel");
}
if(alphabet=='o'){
    printf("It is vowel");
}
if(alphabet=='u'){
    printf("It is vowel");
}
else {
    printf("It is consonant");
}
return 0;
 }

output: depend on your value