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#include <stdio.h> static void _itoa(int n, char **p) { int i, n1, n2, n3; int column = 0; n1 = n; do{ n1 /= 10; column++; }while(n1); n1 = n; n2 = 1; for(i = 0; i < column - 1; i++) n2 *= 10; for(i = column; i > 0; i--){ n3 = n1 / n2; *(*p) = '0' + n3; (*p)++; n1 %= n2; n2 /= 10; } } int main() { char buf[1024 * 16]; char *p; int i; p = buf; for(i = 0; i < 2000; i++){ *p = 's'; p++; _itoa(i , &p); *p = 'e'; p++; *p = '\n'; p++; } printf(buf); }
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