Below is the program to find the index of given number in an array.
#include <stdio.h>
int main(){
int i,v;
printf("Enter no.of values u want to enter:\n");
scanf("%d",&i);
int arr[i];
printf("Enter set of nums:\n");
for(v=0;v<i;++v){
scanf("%d",&arr[v]);
}
int s;
printf("Enter element u want to search for:\n");
scanf("%d",&s);
int y,n=0;
for(y=0;y<i;++y){
if(arr[y]==s){
printf("The index of the given numbers is %d",y);
n=1;
break;
}
}
if(n==0){
printf("The number is not present in the array");
}
return 0;
}Output 1:
Enter no.of values u want to enter:
5
Enter set of nums:
3
6
7
2
6
Enter element u want to search for:
6
The index of the given numbers is 1
Output 2:
Enter no.of values u want to enter:
4
Enter set of nums:
3
6
7
8
Enter element u want to search for:
5
The number is not present in the array
