C plus plus program for 1223334444..?

Answer 1

int n, i;

for(n = 1; n <= 5; ++n) {

for(i = 1; i <= n; ++i) { printf("%d", n);

}

}

Answer 2

const int max = 9;

int n, i;

for(n = 1; n <= max; ++n) {for(i = 1; i <= n; ++i) {printf("%d", n);}}