সমস্যা - ২৬ ( গ্রেড নির্ণয় )

	#include <stdio.h>
	int main()
	{
	int a, b, run;
	scanf("%d",&run);
	for(b = 0; b < run; b++)
	{
	scanf("%d",&a);
	printf("Case %d: ",b + 1);
	if(a >= 80 && a <= 100) {
	printf("A+\n");
	}
	else if(a >= 75 && a <= 79) {
	printf("A\n");
	}
	else if(a >= 70 && a <= 74) {
	printf("A-\n");
	}
	else if(a >= 65 && a <= 69) {
	printf("B+\n");
	}
	else if(a >= 60 && a <= 64) {
	printf("B\n");
	}
	else if(a >= 55 && a <= 59) {
	printf("B-\n");
	}
	else if(a >= 50 && a <= 54) {
	printf("C\n");
	}
	else if(a >= 45 && a <= 49) {
	printf("D\n");
	}
	else if(a >= 0 && a <= 44) {
	printf("F\n");
	}
	}
	return 0;
	}

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