#include void main() { int a,n; float c,sum=0; printf("Enter n: "); scanf("%d",&n); for (a=1;c<=n;c=c+2) sum=sum+1/n; printf("sum=%f",c); }
将for ( b=1;b<=2*n;b=b+2)改为for ( b=0;b将c=c+(float)1/n;改为c+=(float)1/(2*b+1);
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