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# include <stdio.h>
int main( )
{
int radius;
double area;
for(radius = 1; radius <= 10 ; radius++)
{
area = 3.1416 * radius * radius;
/* ÈôÔ²Ãæ»ý³¬¹ý120£¬ÔòÌø³öforÑ»·£¬²»ÓèÊä³ö */
if(area >= 120.0)
break; // Ìø³öÑ»·
printf("square = %f\n", area);
}
printf("now radius=%d\n\n", radius-1);
for(radius = 1; radius <= 10 ; radius++)
{
area = 3.1416 * radius * radius;
/* ÈôÔ²Ãæ»ýûÓг¬¹ý60£¬Ôò²»Êä³ö¶øÊÇ´ÓпªÊ¼Ñ»· */
if(area < 120.0)
continue; // »Øµ½Ñ»·Í·²¿,¼ÌÐøÏÂһѻ·
printf("square = %f\n", area);
}
printf("now radius=%d\n", radius-1);
return 0;
}
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# include <stdio.h>
int main()
{
int x, y;
printf("ÇëÊäÈë×Ô±äÁ¿x£º");
scanf("%d", &x);
if(x < 6)
{
  ......
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# include <stdio.h>
int main()
{
int i, j, k;
/* ±äÁ¿i´Ó0µ½4£¬±íʾËù»ÁâÐÎͼµÄµÚÒ»ÖÁµÚÎåÐÐ */
for(i = 0; i <= 4; i++)
{
/* ......