C language and c ++: two methods: printing 100 ~ Prime number between 200

C language and c ++: two methods: printing 100 ~ Prime number between 200
Method 1 programming in C language:

#include <stdio.h>#include <math.h>int main(){int i=0;    int count=0;for(i=101;i<=199;i+=2){int j=0;for(j=3;j<=0.5*sqrt(i);j+=2){if(i%j==0){break;}}if(j>0.5*sqrt(i)){count++;printf("%d  ",i);}}printf("count=%d\n",count);return 0;}

 

Output result: 101 103 107 109 113 119 121 127 131 133 137 139 143 149 151 157 161 163 167 169 173 179 181 187 191 193 197 199 count = 28 Press any key to continue with c ++ programming: # include <iostream> # include <cmath> using namespace std; int main () {int I = 0; int count = 0; for (I = 101; I <= 199; I + = 2) {int j = 0; for (j = 3; j <= 0.5 * sqrt (I); j + = 2) {if (I % j = 0) {break ;}} if (j> 0.5 * sqrt (I) {count ++; cout <I <"" ;}} cout <count <endl; return 0;} output result: 101 103 107 109 113 119 121 127 131 133 137 139 143 149 151 157 161 163 167 169 173 179 181 187 191 193 197 28 Press any key to continue method 2 C language programming

#include<stdio.h>#include<math.h>main(){       int i,k,tag,j=0;    for (i=100;i<=200;i++){tag=0;      for(k=2;k<i;k++)        if(i%k==0)tag=1;        if(tag==0){printf("%d ",i); j++;if(j%5==0)printf("\n");}  }}

 

Output: 101 103 107 109 113127 131 137 139 149151 157 163 167 173179 181 191 193 197199 Press any key to continue