C :

#include<stdio.h>
void main()
{
	int n;
	scanf("%d",&n);
	int a,b;
	for(a=1;a<=n;a++){
		for(b=1;b<=a;b++){
			printf("%d*%d=%d ",a,b,a*b);
		}
		printf("\n");
	}
}

C++ :

#include <iostream>
using namespace std;
 
int main(){ 
    int n,i,j;
    cin>>n;
    for(i=1;i<=n;i++){
    	for(j=1;j<=i;j++){
    		cout<<i<<"*"<<j<<"="<<i*j<<" ";
		}
		cout<<endl;
	}
}

Python :

n = int(input())
for i in range(1,n+1):
    # print(i,end = ' ')
    for j in range(1,i+1):
        print('%s*%s=%s' %(i,j,i*j),end = ' ')
    print()