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!pip install jovian --upgrade --quiet
import jovian

Question 1: The user will enter a list of numbers and a separate number. The program will display the index at which the number is present in the list. If the number is absent, it'll return -1. Do NOT use built-in functions for searching.

c=[]
print("enter the length of array/n")
n=int(input())    # reson for entering int is that if user enter 2.2 then loop will not run and this is for all program from now
l=n        
print("/n enter the data")
for i in range(0,n):
    a=input()
    c.append(a)   # array formed
print("/n enter a data to be searched in the array /n")
x=input()
v=0        # assing for further use
print("/n")
for i in range(0,l):
    z=c[i]
    if z==x:
        print(i)
        v=1
        break
if v==0:
    print("Number not present")